Imperial College London


Faculty of Natural SciencesDepartment of Physics

Professor of Solid State Physics



+44 (0)20 7594




B909Blackett LaboratorySouth Kensington Campus





Ji-Seon Kim is Professor of Solid State Physics and Director of the Plastic Electronics Centre for Doctoral Training ( at Imperial College London. She also held a Visiting Professorship in Materials Science and Engineering at KAIST, South Korea. She has previously taken up an EPSRC Advanced Research Fellowship at the University of Cambridge, obtained a PhD in Physics in 2000 under the supervision of Prof. Sir Richard Friend, was a Post-Doc in Cambridge. She is conducting scientific research as a technical consultant for Cambridge Display Technology (CDT) Ltd.

Her research focuses on the basic science and technology of Nanoscale Functional Materials such as organics, organic/inorganic hybrids, nano/biomaterials and related applications, as well as developing novel Nanometrology for these functional materials. Her research programme benefits from multidisciplinary scientific background in experimental and theoretical physics and surface/interface science, which provides a unique perspective to approach the research programme in molecular, polymeric, and hybrid electronic materials and devices. She is leading the Nanoanalysis Group (, working together with industrial partners including Samsung, CSEM Brazil, KP-Tech, CDT Ltd. and NPL.

Our recent papers for metrology developed for molecular semiconductors: Raman Spectroscopy as an Advanced Structural Nanoprobe for Conjugated Molecular Semiconductors (Invited topical review);   Organic Photovoltaic Blends Probed by Surface-Enhanced Raman Spectroscopy

PhD projects for 2018 entry are now available! 

Organic Bioelectronics” A recent trend in neuromorphic engineering involves the use of devices based on organic electronic materials. This is largely motivated by the attractive characteristics organic devices offer in interfacing electronics with biology. Key advantages of organic-based materials include their compatibility with low cost processing on large area, mechanically-flexible substrates that can be conformal to the body as well as the tunability of their properties via blending and chemical synthesis. The aim of the proposal is to develop organic-based composites and implement neuromorphic device architectures suitable for the processing of biological (e.g. brain) signals with a view towards applications in the field of implantable electronics, health monitoring, and neural prosthesis. This project will be co-supervised by Prof George Malliaras (Department of Engineering, University of Cambridge).

Organic Near-IR Sensors” Organic sensor devices such as organic photodetectors (OPDs) are important optoelectronic applications using organic semiconductors as a light detecting active medium. For OPD applications, it is critical for organic semiconductors to have efficient light harvesting (with high photocurrent and low dark current) and high spectral selectivity (from UV to NIR/IR) properties. Although the rich variety of organic compounds with their absorption spanning from the UV to NIR offers unique possibilities for these required properties, organic semiconductors with a large photoresponse at NIR spectral ranges with efficient light harvesting and air stability are still very difficult to find.  This project aims to develop key fundamental understanding of organic sensor materials and devices towards high-performance and high-stability NIR photodetectors.

Organic and Hybrid Solar Cells” Continuous increase in the device performance of organic and hybrid (e.g. perovskites) solar cells is strongly related to better understanding of optical and electronic properties of the photoactive layer. There are still many electronic processes in organic/organic and organic/inorganic layers that are critical to device performance (e.g. charge carrier generation/recombination, trapping of electrons and holes, and ionic movement) and are not yet fully understood. This project aims to investigate these important electronic processes in terms of their energetics and photogenerated surface photovoltage and its transient behaviours, and hence to understand and improve solar cell device performance. 

Please contact me ( for more details.




Cha H, Wu J, Wadsworth A, et al., 2017, An Efficient, "Burn in" Free Organic Solar Cell Employing a Nonfullerene Electron Acceptor, Advanced Materials, Vol:29, ISSN:0935-9648

Wade J, Wood S, Collado-Fregoso E, et al., 2017, Impact of Fullerene Intercalation on Structural and Thermal Properties of Organic Photovoltaic Blends, Journal of Physical Chemistry C, Vol:121, ISSN:1932-7447, Pages:20976-20985

Yu JC, Kim DW, Kim DB, et al., 2017, Effect of the solvent used for fabrication of perovskite films by solvent dropping on performance of perovskite light-emitting diodes, Nanoscale, Vol:9, ISSN:2040-3364, Pages:2088-2094

Wood S, Hollis JR, Kim J-S, 2017, Raman spectroscopy as an advanced structural nanoprobe for conjugated molecular semiconductors, Journal of Physics D-applied Physics, Vol:50, ISSN:0022-3727

Razzell-Hollis J, Fleischli F, Jahnke AA, et al., 2017, Effects of Side-Chain Length and Shape on Polytellurophene Molecular Order and Blend Morphology, Journal of Physical Chemistry C, Vol:121, ISSN:1932-7447, Pages:2088-2098

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