Past Group members


Dr Shinto Varghese

Shinto was born and bought up in Kerala, India. He had his Ph. D. (2011) in Physical chemistry from the National Institute for Interdisciplinary Science and Technology (NIIST), CSIR, Kerala. Subsequently, moved to IMDEA Nanociencia, Madrid to work on Exciton coupling and dynamics in luminescent molecular crystals. Shinto was a Marie Curie Intra European Fellow (IEF) in the group, investigating the prospects of the electrically pumped lasers by indirect and direct injection methods. He was also involved in the investigation of exciton diffusion in molecular crystalline and polymeric materials.






Dr Paulina Morawska

Paulina graduated from Gdansk University of Technology in Poland in 2011 with a MEng in Applied Physics. For her Masters project she completed an investigation into the study of electromodulation of exciplex fluorescence in organic films. She joined St Andrews in January 2012 to start a PhD in organic polymer lasers for use as explosives sensors in the TIRAMISU project under the supervision of Prof Graham Turnbull and Prof. Ifor Samuel. After completing her PhD Paulina moved to a secondment at Helios Photonics.







Dr Ashu Kumar Bansal

Ashu was born in Saharanpur in India. He received M.Sc in physics from Indian Institute of Technology (IIT) Roorkee and M.Tech. in applied optics from Indian Institute of Technology (IIT) New Delhi. After this for a brief period he has worked on Fibre Bragg Grating (FBG) sensors as a project assistant in central scientific instruments organisation, Chandigarh. Then he moved to Germany to obtain his Ph.D. in physics at University of Regensburg under the supervision of Prof. Alfons Penzkofer on spectroscopic characterisation of organic electroluminescent materials. In June 2008 Ashu has joined the Organic Semiconductor Optoelectronics group as a research fellow and since then he has been involved in various projects, which include photophysical characterisation of materials to device fabrication and applications of organic electronic devices in biomedicine. After leaving the group he became a project Manager at Techcomp Research and Engineering Centre.

Dr Bernd Ebenhoch

Bernd was born in Isny, southern Germany, where he also did his diploma in physics at the University of Applied Sciences nta. After spending two years in industry working on the characterization of X-Ray detectors Bernd moved back to academia, studying for a Masters in photonics at the University of Applied Sciences in Munich. In 2010 he joined the group under Dr Graham Turnbull to complete his Masters project on organic lasers. Bernd then stayed on with the group by starting a PhD in organic solar cells under the supervision of Prof. Ifor Samuel, investigating device fabrication with novel organic semiconductors to improve solar cell performance. After leaving the group Bernd has gone on to do postdoctoral research at the Karlsruhe Institute of Technology.


Dr Gordon Hedley

Gordon was born and brought up in Stranraer in south west Scotland. In 2005 he received an MSci degree in Physics from the University of Durham. His Masters year project at Durham was investigating the dynamics of new OLED compounds and it was here that he first became enthused by the field of chemical physics. He joined the Organic Semiconductor Optoelctronics group here in St Andrews in September 2006 under the supervision of Prof. Ifor Samuel to commence study for a PhD on the ultrafast photophysics of iridium complexes. After completing his PhD Gordon stayed with the group, looking at the photophysical properties of organic systems. Outside of the lab Gordon's interests include history, technology and the dynamic between the two, wiki's and how collaborative development can operate in a scientific environment. Gordon is now conducting postdoctoral research at the University of Regensburg in the group of Prof. John Lupton, also an alumnus.

Dr Mithun Chowdhury

Mithun was born and brought up in suburban Kolkata (Calcutta, India). In 2008 he received an MSc degree in chemistry with specialization in physical chemistry from the University of Calcutta. During his masters he briefly worked at Saha Institute of Nuclear Physics Kolkata and University of Hyderabad, mainly on the magnetic/optical properties of inorganic/organic nanoparticles. Then he moved to University of Freiburg, Germany to obtain his Ph.D. in polymer physics on 2012 working with Prof. Gunter Reiter on properties of glassy polymer thin films. Here he developed a great interest on soft matters at the surface and interfaces. In 2012 he was awarded Dr. rer. nat. and subsequently moved to Trinity College Dublin as a postdoc to work on the nanomechanical studies on polymer thin films with Dr. Graham Cross. Mithun joined the group in March 2014, working as a postdoctoral research fellow with Prof. Ifor Samuel. His area of work here lies on the role of preparation condition and post-processing on conjugated polymer films finally aiming towards its exciton diffusion and solar cell applications. Whether in science or beyond he is interested in traveling and doing collaborative activities. After leaving the group Mithun took up a postdoctoral position at Princeton University.

James Stevenson

James was born in Edinburgh, Scotland. He graduated with an MPhys in physics with photonics from the University of St Andrews in 2011. During his undergraduate studies he was a participant in the organic electronics and applications erasmus intensive program in 2010 and carried out his masters project on electrospinning of polymer nanofibres under Dr Graham Turnbull. James joined the group in 2011 to study for his PhD with the intention of continuing work on electrospinning of semiconducting polymers and working on polymer lasers.



Scott Pearson

Scott graduated with an MPhys in physics from the University of St Andrews in 2011. In the summer of 2010 he examined organic semiconductors using single molecule spectroscopy with the Organic Semiconductor Optoelectronics and Single-Molecule Biophysics groups. In September 2011 he started a PhD continuing his Masters investigation of charge recombination and photophysical properties of organic solar cells under the supervision of Prof. Ifor Samuel. After completing his PhD Scott has gone on to work for Selex.







Dr Tom Wood

Tom was born in Malvern, England, and studied for his undergraduate degree of 'Physics with Study in Europe' jointly at the University of Manchester and Universite Joseph Fourier in Grenoble, France. Following the end of his Masters in 2009, he moved to France to carry out his PhD studying photonic transducers for gas sensing in the Im2np lab at Aix Marseille Universite, with several placements at Universidade do Sao Paulo in Brazil. Having completed his PhD, Tom remained in the same group in Marseille until the end of 2013 for an initial post-doctoral position characterising organic semiconductors for solar cell applications by optical means including ellipsometry and integrating sphere photometry. During 2014, he worked at City University of Hong Kong performing optical measurements including time-resolved photoluminescence and Raman spectroscopy on nanostructured semiconductors, as well as engaging in nanofabrication activities. In April 2015, Tom started working at the University of St Andrews as a Research Fellow on the UP-VLC project for visible light communications, where his responsibilities included the simulation, fabrication and characterisation of nanostructured grating elements.


Dr Andrew Matheson

Andrew was born in Inverness and grew up on the Black Isle in the Scottish Highlands. He studied physics at the University of Edinburgh from 2006, graduating with an MPhys in 2011. He joined the group in September 2011 to start a PhD studying the photophysics of organic solar cells, initially focussing on polaron generation, under the supervision of Prof. Ifor Samuel. Andrew is now a Postdoctoral Research Associate at the University of Edinburgh.









Dr Olena Kulyk

Olena obtained BSc and MSc in Physical and Biomedical Electronics at NTUU 'KPI' in Kiev. She worked on inorganic semiconductors during her BSc in Kiev and near-field micro-probing during her MSc at ECIT, Queen's University of Belfast. Before coming to the group for a PhD, Olena worked on electronic circuits for critical systems at the Kiev Design Bureu. Her research interests while in the group included light-tissue interactions, skin optics and phantoms, optoelectronic design and engineering, computer simulations and fluorescence imaging for Photodynamic Therapy (PDT) for skin lesions. Beyond her research she enjoys keeping fit, dancing, travelling, cooking and socialising. Olena went on to work at ELI, a European programme to develop advanced lasers.


Dr Iain Robertson

Iain is from the Isle of Skye. He graduated from the University of St Andrews with an MSci in Materials Science in 2011. His studies included a year in the Swiss federal materials research lab EMPA, working on solid oxide fuel cell (SOFC) electrode nanostrucutres, and a Master's project on a computational method for nano crystal structure determination from XRD data. His other interests include reading, woodworking and playing badminton. After leaving the group Iain joined the leading patents agency Marks and Clerk




Dr Gopala Krishna Thalluri

Gopala Krishna Thalluri was born in a Hyderabad, India. In 2007, he received M.Sc (Engg) degree in Microsystems Integration Technology from Chalmers University of Technology , Sweden. Then he moved to Belgium in 2008 to obtain Ph.D. in physics at University of Hasselt, Belgium under the supervision of Prof. Jean Manca on preparation and characterization of hybrid solar cells. In 2012, he started as a postdoctral researcher at Laboratory of Structural Inorganic Chemistry (LCIS) and the Group of Research in Energy and ENvironment from MATerials (GREEnMat), University of Liege, Belgium on investigating the dye-sensitized solar cells for a special light guide application. In March 2014, he joined the group as a research fellow working on preparation and characterization of organic solar cells. After leaving the group Gopala joined Helios Photonics.


Dr Hien Nguyen

Hien was born in Hanoi, Vietnam. She received her BSc degree in Chemistry from the Vietnam National University in 2002. She then moved to Leeds and studied for both her MSc and PhD in Chemistry at the University of Leeds. After finishing her PhD in 2007 she moved to City University London, working as a Research Fellow on the development of fibre optic chemical sensors for several years before moving to St Andrews. Hien joined the team at the Organic Semiconductor Centre in October 2012. After leaving the group Hien went on to conduct postdoctoral research at City University, London.






Dr Shuyu Zhang

Shuyu was born in Suzhou, China. He completed his undergraduate studies at Soochow University with a major in Physics in 2007 and his master studies at Fudan University with a major in Plasma Physics in 2010. In September 2010, he joined Prof. Samuel's group here at the University of St Andrews to research organic optoelectronic devices for his PhD. He earned a PhD title in May 2014 with the thesis title of ‘Directional organic light-emitting diodes using photonic microstructure’. After working in the group as a Research Fellow mainly on the EPSRC project ‘Ultra-parallel visible light communications’, Shuyu went on to Fudan University, Shanghai where he is now an assistant professor.




Dr Sanjay Ghosh

Sanjay studied M. Sc. (Physics) from Sant Gadge Baba Amravati University, India. Thereafter he qualified the National Eligibility Test for lectureship and joined the Department of Physics, North Maharashtra University, India as an Assistant Professor. After completing Ph. D. from the University of Pune in June 2013. He joined the organic optoelectronics research group at the University of St. Andrews as a postdoctoral research fellow in January 2014 working in the field of organic solar cells. Sanjay returned to North Maharashtra University, where he is now an assistant professor.






Dr Guohua Xie

Guohua studied for his BSc, M.Sci and PhD at Jilin University, Changchun, China. From September 2006 to July 2011, he studied and worked on OLEDs in the State Key Laboratory on Integrated Optoelectronics. His doctoral research projects were mostly related to integration of OLEDs on active matrix backplanes, such as LTPS and CMOS. After defending his PhD degree, he started an internship in department COMEDD at Fraunhofer IPMS, Dresden, Germany, from August 2011. During the whole year of 2012, Guohua carried out his postdoctoral research which was sponsored by Alexander von Humboldt Foundation and hosted by Prof. Karl Leo at both IAPP, TU Dresden and Fraunhofer COMEDD. In January 2013, he joined the group conducting research on OLEDs. He is now an Associate Professor at Wuhan University, China.

Dr Fei Chen

Fei studied her MA at the Chinese University of Hong Kong and her PhD in laser physics at Université d'Angers, France. Her doctoral project was on dye-doped distributed feedback waveguide lasers. After finishing her PhD, she took up a postdoctoral position at Dublin City University. Since 2011, she had worked on an EPSRC project for developing fibre Bragg gratings based external cavity laser diodes for optical gas detection. She joined the OSC in November 2013 where research involved the study of photophysics, light amplification in light emitting polymers, and polymer lasers for explosive sensing. Fei is now an Assistant Professor at Nanjing University of Technology, China.




Dr Zarifi Masri

Zarifi was born in Bandar Seri Begawan, Brunei Darussalam. He graduated from University of Nottingham with a BSc degree in Physics in 2004. In 2006, he received an MSc degree in Materials Physics and Applications from Loughborough University. His MSc research project focused on the investigation of high strain rate deformation behaviour of Nickel-Titanium shape memory alloy. He joined Prof. Ifor Samuel's group in October 2010 to pursue a PhD on exciton diffusion and charge transport in organic solar cells. Zarifi's other interests are playing football, badminton and squash.



Dr Alex Ward

Alex was born in a village near Cambridge. In 2010 he graduated from Imperial College London with an MSci in Chemistry. For his year-long masters project, under the supervision of Dr Saif Haque, he studied a novel chemical process to manufacture cadmium sulphide inorganic nanocrystals directly within a semiconducting polymer, in the solid state. The optimisation of such a technique, it was hoped, would lead to increased efficiencies in hybrid polymer-nanocrystal solar cells. In 2010 he joined the Organic Semiconductor Optoelectronics group at St Andrews and investigated using photophysical techniques to calculate exciton diffusion lengths in organic semiconductors. In his spare time he enjoys going to gigs, drinking ale, playing squash and running. Alex was awarded the RSE Enterprise Fellowship and founded the spin out company Razorbill instruments

Dr Emiliano Rezende Martins

Emiliano is from Ituiutaba, Brazil. He graduated in Electrical Engineering from the University of Sao Paulo in 2005. Following this he received his MSc in Electrical Engineering in 2008 from the same university, with a thesis topic on modelling of the supercontinuum generation in photonic crystal fibres. He then joined the Erasmus Mundus Masters of Photonics in 2008. In the first year of this master he studied at the Royal Institute of Technology (KTH) in Stockholm and then moved to the University of St Andrews for his second year. He completed his master in 2010 with a thesis on microstructured silicon solar cells. Emiliano joined the Organic Semiconductor Optoelectronics group in 2010 under the supervision of Prof. Ifor Samuel to pursue his PhD on microstructured organic semiconductors and is now a professor at the University of Sao Carlos.

Dr Calvyn Travis Howells

Calvyn was born in Johannesburg, South Africa. He graduated from the University of Strathclyde with a MSci in Physics. During his undergraduate studies he conducted two research projects. The first, was on the topic of Non-volatile two colour holographic data storage at the University of Muenster, Germany. The second, which was for his MSci degree, investigated the effects of BEC distributed uniformly in potentials created by counter propagating lasers. On completion of his studies at Strathclyde, he began a PhD within the Organic Semiconductor Optoelectronics group at the University of St Andrews, under the supervision of Professors Ifor Samuel and Graham Turnbull. Calvyn completed his PhD on the investigation of material and device design for organic photovoltaics and worked as a geophysicist for almost two years at CGG. He continues to research organic photovoltaics at Masdar Institute, Abu Dhabi, and is founder and CEO of De La Terre limited.

Dr Qin Xue

Qin received her BSc, MSc and PhD degrees from Jilin University, Changchun, China. From 2008 to 2011, she studied and undertook research on OLEDs in the State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University. Her research focused on improving the performance of blue and then white OLEDs. Since July 2011, she has been appointed as a lecturer working for College of Physical Science and Technology, Central China Normal University. Under the sponsorship of China Scholarship Council, now Qin is a visiting scholar in Prof. Samuel’s group and investigating the photophysics of OLEDs.





Dr Upendra Pandey

Upendra was born in Kushinagar in India. He received M.Sc. Electronics from DDU Gorakhpur University Gorakhpur and an M.Tech. in Opto-electronics from Shri GS Institute of Tech. & Science. Indore, Madhya Pradesh India. More than 3 years he has worked as a Senior Engineer, in Quantalase Ent. Pvt. Ltd. Indore, a laser based industry. He followed his passion towards organic electronics and did Ph.D. in Science and Technology of Mesosphase and Molecular Materials with the supervision of Prof. Attilio Golemme, University of Calabria, Italy. In January 2013 Upendra joined the Organic Semiconductor Optoelectronics group as a research fellow, using different novel organic semiconductors to improve solar cell performance. He has now taken up a position in the Interdisciplinary Centre for Energy Research.

at the Indian Institute of Science.

Dr Yue Wang

Yue was born in Hubei China in 1985. She graduated from the East China Normal University in Shanghai with BEng degree in Electronic Science & Technology in 2007. The following year she went on to receive an MSc degree in Photonics and Optoelectronic Devices jointly from the Universities of St Andrews and Heriot Watt. In September 2008 she joined the Organic Semiconductor Optoelectronics group to start a PhD under the supervision of Dr Graham Turnbull and Prof. Ifor Samuel. Her PhD research was on developing organic laser fabrication by nanoimprint lithography. In 2012 Yue completed her PhD and successfully won a EPSRC Doctoral Prize Fellowship to develop a novel multifunctional explosive sensing array here in the group. In 2013 she moved to the University of York as a postdoctoral researcher.



Dr Steven Quinn

Steve initially joined the Single-Molecule Biophysics lab during the summer of 2008 as a research student before completing his M.Phys. degree in 2009. In both, he investigated the molecular basis of Alzheimer's disease using novel fluorescence based techniques. After completing his undergraduate course in St Andrews, Steve moved to the University of Oxford and worked towards the MSc. by Research degree by developing new surgical tools for fluorescence based laparoscopy. In 2010, he returned to the group and to pursue a PhD in developing a biophysical toolbox for Alzheimer's disease drug discovery under the supervision of Prof. Ifor Samuel and Dr Carlos Penedo. In 2013, Steve took up a BBSRC funded Postdoctoral Research post in Dr. Steven Magennis' lab at the University of Glasgow, where he is currently investigating DNA replication at the single-molecule level.

Dr Neil Montgomery

Neil graduated from the Lancaster University in 2008 with an Mphys in Physics. For his master's project, he completed an investigation into the study of propagation and decay of quantum turbulence in superfluid helium-4. He joined St Andrews in September 2008 to start a PhD on polymer lasers under the supervision of Prof. Ifor Samuel and Dr Graham Turnbull. In 2012 Neil began working at the UK patent office as an examiner.









Dr Salvatore Gambino

Salvatore Gambino received his first degree (MSc degree) in "Electronic and Telecommunication Engineering" from the University of Palermo (Italy) in 2001. The following year he was an INFM fellow at ENEA Research Center (Rome), working on realisation and characterisation of organic LEDs. Then he moved to the University of Palermo where he started his PhD working on charge transport properties of organic semiconductors using time of flight techniques. During his PhD he joined the Organic Semiconductor Centre here in St Andrews to carry out his research in collaboration with Prof. Ifor Samuel. In 2006 he received his PhD from the University of Palermo. The same year he was appointed research fellow at the department of Electronic Engineering (University of Palermo) working on organic solar cells. In 2008 he rejoined the Organic Semiconductor Optoelectronics group in St Andrews working on realisation and characterisation of dendrimer based organic light emitting diodes. In 2012 Salvatore took up a new position as a Senior Postdoctoral Researcher the The Italian Institute of Technology, continuing to work with organic semiconductors.

Dr Georgios Tsiminis

Georgios was born in Athens, Greece where he completed his undergraduate studies at the National Technical University of Athens with a Major in Applied Physics in 2004. In September of the same year he started the MSc in Photonics and Optoelectronic Devices at the University of St Andrews and Heriot-Watt University. He completed the course with distinction and joined the Organic Semiconductor Optoelectronics group for his PhD (one- and two-photon pumped organic semiconductor lasers) under the supervision of Dr Graham Turnbull and Prof. Ifor Samuel. In 2009 he became a research fellow in the group working on UV-nanoimprint lithography for organic semiconductor lasers as part of the HYPIX project. In October 2011 Georgios moved to the Institute for Photonics and Advanced Sensing at the University of Adelaide as an ARC Super Science fellow to work on detection of trace quantities of explosives.

Dr Jack Levell

Jack studied for his undergraduate degree at Churchill College, Cambridge and graduated in 2007. His masters project involved modelling charge transport in TiO2 nanoparticles with Neil Greenham at the Cavendish laboratory there. In September 2007 he joined Ifor Samuel's group at the University of St Andrews to research optoelectronic devices for his PhD.
His work included the photophysical investigation of new materials and making organic light emitting diodes. He has worked on phosphorescent polymer dendrimer materials with high viscosity for ink jet printed light emitting diodes and the development of a solution processable enhancement layer for efficient ultraviolet photodetectors made from silicon. Jack completed his PhD in 2011 and took up a research position on organic electronics with the Holst Centre in Eindhoven and now works for Shell.

Amy Illingworth

Amy was born in Penrith, Cumbria. In September 2004 she started at the University of Sheffield to study for an MPhys degree. This included studying abroad at the University of Alberta, Canada and a final year project on polymer optoelectronics with Professor David Lidzey. In September 2009 she joined Professor Ifor Samuel's group, looking at exciton diffusion and the morphology of organic photovoltaics. Her other interests include rock climbing and mountaineering. In 2011 Amy began a career in the financial services industry, training in actuarial studies.






Dr Ying Yang

Ying was born in Guangzhou China and graduated with a BSc degree in Physics with a major in microelectronics from Sun Yat-Sen (Zhongshan) University. She pursued her education with a Master degree in Photonics & Optoelectronics Devices held by St Andrews and Heriot-Watt Universities. In 2006, Ying joined the Organic Semiconductor Optoelectronics group and the OSC to start a PhD under the supervision of Prof. Ifor Samuel and Dr Graham Turnbull. Her research involved the study of LED pumping methods in organic lasers. In 2011 Ying took up a postdoctoral research position at Imperial College in London.




Dr Ajay Pandey

Ajay was born in Ballia in India. He obtained a M.Sc in Physics from the University of Allahabad and the M.Tech in Laser Science and Applications from the Devi Ahilya University of Indore. With a short stay at the Indian Institute of Technology in Kanpur as a research engineer he moved to obtain a PhD with Prof. Jean-Michel Nunzi at Laboratory POMA, Angers in France. His doctoral work was on the study of physics and models of plastic solar cells. He joined us as a research fellow in May 2007 and currently worked on dendrimer based photodiodes and solar cells. In 2010 Ajay took up a postdoctoral research position with Paul Burn's group in Queensland, Australia then won an ARC fellowship to develop his own research.




Dr Paul Shaw

Paul graduated from the University of Manchester in 2001 with an Mphys in Physics and Astrophysics. He worked for a year with the Royal Bank of Scotland in Edinburgh before leaving to join the DisplayMasters Msc at the University of Dundee in 2004. Through this course Paul became very interested in OLEDs and completed an industrial placement with CDT Ltd, working on the benchmarking of OLED displays. He joined the department at St Andrews in September 2005 to start a PhD on polymer photophysics under the supervision of Prof. Ifor Samuel. Paul successfully completed his PhD in May 2009 and has now taken up a postdoctoral research position with Paul Burn's group in Queensland, Australia, obtaining an ARC fellowship to develop his own research.



Dr Mario Giardini

Dr Mario E. Giardini graduated and received his PhD in Electronic Engineering and Computer Science at the University of Pavia, Italy. He has been a Research Scientist for the National Institute for Physics of Matter (INFM, Italy), where he developed instruments, devices and technologies for a diverse range of mainly biomedical and biotechnological applications. His research has implied a framework of constant contact with industry, including three years as head of the R&D activities of a leading microscope manufacturer. He joined Ifor Samuel's team to work on forensic applications of fluorescence detection. He is now a lecturer in biomedical engineering at Strathclyde University.

Dr Sarah Martin

Sarah grew up in Greece and Germany, and studied physics, materials science and geology at Newnham College, Cambridge. For her MSci project she worked on organic transistors with Henning Sirringhaus, and loved it. After graduating in June 2004 she spent 2 months at the RIKEN institute in Japan on a JISTEC-REES Fellowship investigating the mobility of polymers, and travelling. She moved to St Andrews to work on an interdisciplinary PhD with Ifor Samuel and Ron Hay in September of that year. Her work formed part of the Biophotonics Collaboration research, and included investigating resonance energy transfer (FRET) in fluorescent proteins. In 2008 Sarah took up a posdoctoral position at the University of Edinburgh.

Dr Stuart Stevenson

Stuart graduated with a MEng (Hons) degree in Semiconductor Engineering from the University of Dundee, Scotland, in 2004. He joined the Polymer Optoelectronics group at the University of St Andrews, Scotland, working towards a Ph.D. in organic physics. His research interests included the study of charge transport and photo-physics in dendrimer OLED devices. After obtaining his PhD Stuart went on to work in industry.









Dr Elizabeth A. Thomsen

Elizabeth graduated in 2003 from the University of Queensland, Australia with a B.Sc. (Hons) in Physics. The following year she continued there as a research assistant working on quantum dot fabrication and spectroscopy. She joined the polymer optoelectronics group in September 2004 to start a PhD under the supervision of Prof. Ifor Samuel. Her research involved characterisation and improvement of organic photovoltaics.








Dr Ruth Harding

Ruth graduated with a first class MSci in Physics from Queen Mary and Westfield College, London in 2000. She completed a PhD in Physics at Kings college London in 2004 under the supervision of Gordon Davies on using photoluminescence (PL) to characterise ion implantation defects in silicon. She moved to St Andrews in November 2004 to work on the photo physics of light emitting dendrimers. In 2008, Ruth won a sponsored position to train as a medical physics specialist in Manchester.








Dr Paul Marsh

Paul was educated at Loughborough, Heriot-Watt and St Andrews Universities graduating with a 1st class honours degree in Physics, a MSc. in laser engineering and applications and a PhD in VUV gas lasers and high voltage technology respectively. Subsequently employed at British Aerospace, later to become BAE SYSTEMS, he specialised in high power RF technology and directed infrared countermeasures. After three years, interest in the commercial sector initiated a move to the applications group at the Institute of Photonics where his prime interests were multi-photon imaging, adaptive optics, micro-machining and laser engineering. In February 2005, he joined Ifor Samuel's group conducting research into optoelectronics in the healthcare environment. In 2008 Paul moved a short distance within the School to undertake research with the Millimetre Wave & EPR Group, and then moved to PA Consulting.

Dr Jean-Charles Ribierre

Jean-Charles was born in Caen in France. He obtained a Msc in Physics from the University of Caen and the DEA Photonics and Image from the Louis Pasteur University of Strasbourg. Then, he started a PhD with Dr. Alain Fort at the IPCMS/GONLO on the influence of the viscoelastic properties on the orientational dynamics of push-pull chromophores in photorefractive guest-host polymers. After finishing his PHD, he moved to Japan for 1 year to work as JSPS postdoctoral research fellow at the Supramolecular Science Laboratory of Dr. Tatsuo Wada in RIKEN. He worked there on the optoelectronics properties of liquid carbazole based materials. He took up his position with us in May 2004 and worked on the light emitting dendrimer film morphology and interfacial interactions. Jean-Charles is now an Associate Professor at Kyushu University, Japan.

Dr Olivier Gaudin

Olivier studied at the University of Nantes in France where he obtained a Master's degree in Physics and a DEA (Diploma of Advanced Studies) in Materials Physics. He then moved to the UK where he joined the Diamond Electronics Group in the Department of Electronic and Electrical Engineering at University College London (UCL), first as a Ph. D. student and then as a research fellow. Olivier's research activities at UCL were focused on the investigation of defect states within a range of carbon-based electronic materials and devices, such as polycrystalline CVD diamond deep UV photodetectors, hydrogenated and phosphorous-doped diamond, and polymer light emitting diodes. Olivier received a Ph. D. degree from UCL in 2002 for a thesis on "Defects within Carbon-Based Electronic Materials". He joined the Polymer Optoelectronics Group at the University of St Andrews as a research fellow to work on polymer solar cells. In 2007 Olivier left the group to work for Thorn Light , and then moved to the OLED research group at Solvay.

Dr Andreas Vasdekis

Andreas graduated from the Department of Physics of the National University of Athens in 2002. He obtained an MSc (distinction) in Photonics and Optoelectronic Devices from the Universities of St Andrews and Heriot Watt. His MSc dissertation was completed in CNRS/LPN Photonic Devices for Telecoms Applications Group in Paris in September of 2003. In October of the same year he began working on his PhD thesis in polymer laser microcavities and photonic crystal devices under the supervision of Dr Graham Turnbull and in collaboration with the Photonic Crystal group. In 2007 he joined the Optics Laboratory at the Ecole Polytechnique Federal de Lausanne and is now a Professor at the University of Idaho.

Dr Scott Richardson

Scott was born in near the Scottish border in Berwick Upon Tweed. He received an MSci degree in Astrophysics from the University of St Andrews in 2001. After spending two years working within the IT industry in London, Scott returned to St Andrews to study for his PhD in the field of polymer optoelectronics. After completing his PhD Schott then returned to the IT industry.











Dr Yim Fun Loo (Annie)

Annie graduated from the University of Dundee in 1999 with a 1st class honours in Electrical and Electronics Engineering and in 2003 with a PhD in Organic Thin film research. In October 2003, she took up the Postdoctoral research assistant position at the University of Liverpool working on new materials to replace silicon oxide for the continuous scaling down of devices. She moved to St Andrews in July 2005 to take up a research fellow position at the Organic Semiconductor Centre working on photodiode and field effect transistors using new types of dendrimers. Outside of work, she likes hillwalking, skiing & badminton. In 2006 Annie started working at Molecular Vision.



Dr Pascal Andre

Interested in Physical-Chemistry, Pascal completed his Ph.D in 2001 after having worked on microemulions, metal nanoparticles and optical near field microscopy. This first cycle of research was completed partly within a collaboration between the Universite Pierre & Marie Curie in Paris and the Commissariat a l'Energie Atomique at Saclay. He next moved to the University of North Carolina initially for a year as postdoctoral researcher affiliated to two research groups, within the NSF-Science and Technology Center for Environmentally Responsible Solvents. He then extended his stay a second year, working on solution properties of polymeric surfactants in liquid and supercritical carbon dioxide. Pascal joined the groups of Prof. David Cole-Hamilton and Prof. Ifor Samuel in October 2004 researching photophysical and optoelectronic properties of new semiconductor nanoparticles as well as hybrid organic-inorganic dendrimers. In October 2006, Pascal started a SUPA Advanced fellowship at the University of St Andrews to work on nanocolloids.

Dr Andy Lewis

Andy was born in 1979 in Birkenhead, Merseyside but grew up in Lancashire. Educated at Bolton School from 1990-1997, he then moved to the University of St Andrews and obtained his B.Sc. Physics degree (2001) and a M.Sc. in Photonics and Optoelectronics (2002). He then joined our group for a PhD on characterisation and improvement of organic photovoltaics using both polymers and dendrimers under the supervision of Prof. Ifor Samuel. Andy's interests outside of the lab include music, computing, sport and theatre. In 2006, Andy started work at Qinetiq.






Dr Mark Goossens

Mark graduated with a MSci (Hons) in Astrophysics from the University of St Andrews in 2001. The following year he went on to receive a MSc degree in Photonics and Optoelectronic Devices jointly from the Universities of St Andrews and Heriot Watt. In September 2002 Mark joined the Polymer Optoelectronics group to start a PhD under the supervision of Prof. Ifor Samuel. His research involves studying the photophysics of organic materials and devices using ultrafast spectroscopy. In 2006, Mark started work at Edinburgh Instruments.






Dr Chris Yates

Chris studied at Imperial College, London, obtaining a first class honours degree in Chemistry in 1996. He completed a Ph.D. in 2000, studying phase stabilisation of lyotropic liquid crystal structures. Thereafter he joined CRL-Opto in Scotland, working on the development of high resolution ferroelectric liquid crystal microdisplays. In 2003 he joined the research group of Professor Gerd Heppke at the Technische Universitat, Berlin, as a European Research Fellow, studying ferro and antiferroelectric liquid crystals. Chris joined the group in January 2004, and worked towards increasing the extraction of light from OLED devices. In December 2005 Chris started working for Micro Emissive Displays.

Dr Raghu Bera

Raghu received his Ph.D. in 1999 on electrical properties of organic semiconductors from the Indian Association for the Cultivation of Science, Calcutta, India. From 2000-2003 he was a STA Fellow and postdoctoral researcher at the Nanotechnology Research Institute and Photonics Research Institute at the National Institute of Advanced Industrial Science and Technology, Japan. There, he working on optical properties of materials and OLEDs. Raghu joined the group in 2003 and worked on dendrimer photophysics and devices.







Dr Miguel Camacho-Lopez

Miguel received his PhD in physics in 2002 from Heriot-Watt University studying the picosecond third-order nonlinearities and all-optical potentiality of devices containing polydiacetylenes. In December 2000 he joined the Liquid Crystal Institute at Kent State University (Ohio, USA) as a postdoctoral fellow to work with Prof. Peter Palffy-Muhoray on the opto-mechanical properties of liquid crystal eleastomers. In March 2002 he joined the Polymer Optoelectronics Group at the University of St Andrews as a postdoctoral research fellow to work with Prof. Ifor Samuel and Prof. James Ferguson (Photobilology Unit Ninewells Hospital, Dundee) in a project financed by Scottish Enterprise to develop a novel organic light emitting polymer device to be used in Photodynamic Therapy to treat different types of skin diseases, including skin cancer. He now works at the Autonomous University of the State of Mexico.

Dr Phillip Wood

Phillip was born in Ascot in the UK. He obtained a first-class MSci in Physics from the University of Durham and started a PhD there with Ifor Samuel investigating conjugated polymers and oligomers there. He moved to St Andrews with Ifor and obtained his PhD in March 2002. He was also employed as the coordinator of the Organic Semiconductor Centre.








Dr Alison Carleton

Alison studied at the University of St Andrews and received her degree in Physics in 1998, an MSc in Optoelectronic and Laser Devices in 1999 (A jointly ran course with Heriot-Watt University) and her PhD on continuous-wave, intracavity optical parametric oscillators in April 2004. She joined Ifor Samuel's group in November 2002 as a postdoctoral research fellow and investigated microstructured polymer lasers, concentrating on circular distributed feedback lasers.







Dr Ebinazar Namdas

Ebinazar studied at the University of Bombay in India where he obtained a Ph.D on Solid State Dye Lasers. After finishing Ph.D, he moved to Hong Kong for a year at the Chinese University of Hong Kong to study dye doped sol-gel materials and then to Sweden for two years at Lund University to study conjugated polymers. He joined St Andrews University in 2001 to work on light emitting dendrimers. Ebinazar is currently a Research Fellow at the University of Queensland, Australia.







Dr Justin Lawrence

Justin graduated in 1998 from the University of Dublin with a B.Sc (Hons) in Applied Sciences. From 1998-2000 completed a M.Phil at the Dublin Institute of Technology. He spent part of 1999 as a researcher in the University of Liege in Belgium. Justin joined the Polymer Optoelectronics group in September 2000 as a PhD student under the supervision of Prof. Ifor Samuel. His research topic included: Optical amplification and lasing in conjugated polymers and novel semiconducting dendrimers. Fabrication of wavelength scale microstructure by soft lithography and its application to organic semiconductors. He received a PhD in 2004 and moved on to Clemson University in South Carolina. Justin has subsequently moved to Bangor University as a lecturer.



Dr Jonathan Markham

Jon was born in 1977 in Dewsbury, West Yorkshire. In late 1996 he began a Physics degree at the University of Durham, graduating in 2000 with an Msci (Hons) in the subject. A successful research based fourth year undergraduate project into the time resolved behaviour of light emitting polymers supervised by Prof. Ifor Samuel encouraged him to further his studies and undertake a PhD investigating these materials at the University of St Andrews, under the same supervision. His work involved probing the interfacial interactions of polymer materials with Indium Tin Oxide in LED contacts, with an aim to improve device efficiency and quality. Jon received his PhD in 2004 then went on to work as a patent agent in London.

Dr Steven Magennis

Steven was born in Edinburgh in 1974, spending his childhood in nearby Dalkeith. He studied at the University of Edinburgh and received a first class degree in chemistry in 1996 and a PhD in 2000, the latter for work on the synthesis and photoluminescence of lanthanide complexes. Steven took up his present position as a postdoctoral research fellow in St Andrews at the beginning of 2001 and and investigated the nature of the light-emitting species in conjugated polymers. Steven then became an EPSRC Advanced Fellow at the University of Manchester. He is now a Professor and group leader in the University of Glasgow






Prof. John Lupton

John studied physics at the University of Durham and joined Ifor for his PhD in late 1997. His doctoral work focused on the charge transport and photophysics of novel dendrimers for LEDs, but also covered general aspects on the optical and electrical properties of polymer LEDs. His research in Durham was augmented by extended stays with Heinz Baessler in Marburg, Germany, and Shaul Mukamel in Rochester, US. He followed Ifor to St Andrews in 2000 to take up a position as a postdoctoral research fellow. In 2001 he moved to the Max Planck Institute for Polymer Research in Mainz, Germany, where he held a position as project leader in Gerhard Wegner's department, working on ultrafast photoluminescence and electroluminescence spectroscopy of conjugated polymers. In 2002 he was appointed assistant professor at the University of Munich, where he focused on single molecule spectroscopy of conjugated polymers, triplet spectroscopy of polymer LEDs, and the photophysics of novel inorganic nanocrystal quantum dots. John moved to be a Professor of Physics at the University of Utah, and is now a Professor at the University of Regensburg