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, Director of the EPSRC Plastic Electronics Centre for Doctoral Training ( and MRes in Soft Electronic Materials at Imperial College London. She also holds a Specially Appointed Professorship at Tokyo Institute of Technology (Japan), and held a WCU Professorship 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.

Kim's group research focuses on the molecular physics of sustainable organic and hybrid electronic materials. It addresses basic science and technology challenges for molecular semiconductors, extending it towards New Electronic Materials including organic/inorganic hybrids and bio-nanomaterials, exploring fundamental scientific issues related to using these materials for novel optoelectronic applications. It also parallels with developing Advanced Nanometrology for these materials. Two main research themes in her group are (a) to facilitate the rational design of nanoscale electronic materials for electronic applications by providing in-depth understanding and control of their nanostructures and optoelectronic properties; (b) to develop advanced spectroscopy techniques that have the unique capability to probe nanoscale non-periodic structures and energetics at organic and hybrid interfaces. Experimental work is accompanied by theoretical simulation. The success of her program is based on strong collaborative endeavour ranging from materials synthesis/ processing, physical/ electrical characterisation and device fabrication/ modelling, which includes strong collaborations with various national/ international universities and industrial partners. The current research programme is focused on organic and perovskite solar cells, alongside organic bioelectronic and biosensor devices with dual electronic and ionic functionality.

She is leading the Nanoanalysis Group (, working together with industrial partners including Samsung Electronics, CSEM Brazil, KP-Tech, CDT Ltd. and NPL.

PhD projects for 2024 entry available: Please see the list of the projects and contact me ( for more details.

MRes course in Soft Electronic Materials: We are now accepting applications for October 2024 entry!


Selected Publications

Journal Articles

Park SY, Labanti C, Pacalaj RA, et al., 2023, The state-of-the-art solution-processed single component organic photodetectors achieved by strong quenching of intermolecular emissive state and high quadrupole moment in non-fullerene acceptors, Advanced Materials, Vol:35, ISSN:0935-9648

Luke J, Yang EJ, Labanti C, et al., 2023, Key molecular perspectives for high stability in organic photovoltaics, Nature Reviews Materials, ISSN:2058-8437

Stewart K, Pagano K, Tan E, et al., 2023, Understanding Effects of Alkyl Side-Chain Density on Polaron Formation Via Electrochemical Doping in Thiophene Polymers, Advanced Materials, ISSN:0935-9648

Lee TH, Fu Y, Chin Y-C, et al., 2023, Molecular orientation-dependent energetic shifts in solution-processed non-fullerene acceptors and their impact on organic photovoltaic performance, Nature Communications, Vol:14, ISSN:2041-1723, Pages:1-12

Lee J, Luke J, Ahn H, et al., 2022, Efficient Charge Transport Driven by Strong Intermolecular Interactions in Cyclopentadithiophene-Based Donor-Acceptor Type Conjugated Copolymers, Advanced Electronic Materials, Vol:8, ISSN:2199-160X

Tan E, Kim J, Stewart K, et al., 2022, The role of long-alkyl-group spacers in glycolated copolymers for high performance organic electrochemical transistors, Advanced Materials, Vol:34, ISSN:0935-9648

Wang B, Nam S, Limbu S, et al., 2022, Properties and Applications of Copper(I) Thiocyanate Hole-Transport Interlayers Processed from Different Solvents, Advanced Electronic Materials, Vol:8, ISSN:2199-160X

Labanti C, Wu J, Shin J, et al., 2022, Light-intensity dependent photoresponse time of organic photodetectors and its molecular origin, Nature Communications, Vol:13, ISSN:2041-1723, Pages:1-10

Luke J, Yang EJ, Chin Y-C, et al., 2022, Strong intermolecular interactions induced by high quadrupole moments enable excellent photostability of non-fullerene acceptors for organic photovoltaics, Advanced Energy Materials, Vol:12, ISSN:1614-6832, Pages:1-11

Park SY, Labanti C, Luke J, et al., 2022, Organic bilayer photovoltaics for efficient indoor light harvesting, Advanced Energy Materials, Vol:12, ISSN:1614-6832, Pages:1-10

Chin Y-C, Daboczi M, Henderson C, et al., 2022, Suppressing PEDOT:PSS doping-induced interfacial recombination loss in perovskite solar cells, Acs Energy Letters, Vol:7, ISSN:2380-8195, Pages:560-568

Daboczi M, Ratnasingham SR, Mohan L, et al., 2021, Optimal Interfacial Band Bending Achieved by Fine Energy Level Tuning in Mixed-Halide Perovskite Solar Cells, Acs Energy Letters, Vol:6, ISSN:2380-8195, Pages:3970-3981

Vasilopoulou M, Mohd Yusoff ARB, Daboczi M, et al., 2021, High efficiency blue organic light-emitting diodes with below-bandgap electroluminescence, Nature Communications, Vol:12, ISSN:2041-1723

Clarke AJ, Luke J, Meitzner R, et al., 2021, Non-fullerene acceptor photostability and its impact on organic solar cell lifetime, Cell Reports Physical Science, Vol:2

Limbu S, Stewart K, Nightingale J, et al., 2021, Solid-State Ionic Liquid: Key to Efficient Detection and Discrimination in Organic Semiconductor Gas Sensors, Acs Applied Electronic Materials, Vol:3, Pages:2152-2163

Labanti C, Sung MJ, Luke J, et al., 2021, Selenium-substituted non-fullerene acceptors: a route to superior Operational stability for organic bulk heterojunction solar cells., ACS Nano, Vol:15, ISSN:1936-0851, Pages:7700-7712

Luke J, Correa L, Rodrigues J, et al., 2021, A Commercial Benchmark: Light-Soaking Free, Fully Scalable, Large-Area Organic Solar Cells for Low-Light Applications, Advanced Energy Materials, Vol:11, ISSN:1614-6832

Yiwen W, Jinho L, Xueyan H, et al., 2021, Recent progress and Challenges toward highly stable nonfullerene acceptor‐based organic solar cells, Advanced Energy Materials, Vol:11, ISSN:1614-6832

Limbu S, Park K-B, Wu J, et al., 2021, Identifying the Molecular Origins of High-Performance in Organic Photodetectors Based on Highly Intermixed Bulk Heterojunction Blends, ACS Nano, Vol:15, ISSN:1936-0851, Pages:1217-1228

Dong Y, Nikolis VC, Talnack F, et al., 2020, Orientation dependent molecular electrostatics drives efficient charge generation in homojunction organic sol, Nature Communications, Vol:11, ISSN:2041-1723

Wu J, Lee J, Chin Y-C, et al., 2020, Exceptionally low charge trapping enables highly efficient organic bulk heterojunction solar cells, Energy & Environmental Science, Vol:13, ISSN:1754-5692, Pages:2422-2430

Daboczi M, Kim J, Lee J, et al., 2020, Towards efficient integrated perovskite/organic bulk heterojunction solar cells: interfacial energetic requirement to reduce charge carrier recombination losses, Advanced Functional Materials, Vol:30, ISSN:1616-301X, Pages:1-8

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