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Professor Neil Greenham

Professor Neil Greenham

Professor of Physics

Deputy Head of Department (Facilities & Resources)

Fellow and Director of Studies at Clare College

Room 32A, Kapitza Building
Cavendish Laboratory
JJ Thomson Avenue

Cambridge CB3 0HE
Office Phone: +44 (0)1223 766301


Neil Greenham is Professor of Physics at the Cavendish Laboratory, University of Cambridge.  His research focuses on novel low-dimensional semiconductors that can be deposited from solution, in particular conjugated polymers and semiconductor nanoparticles.  He made important early advances in the development of polymer light-emitting diodes, improving efficiencies and understanding the physics of device operation.  He was a Miller Fellow at the University of California, Berkeley from 1995-96, where he developed the first solar cells based on blends of polymers with inorganic semiconductor nanocrystals.  His research now focuses on photovoltaics, using device measurements, spectroscopy, advanced imaging techniques and modelling to understand and control loss mechanisms, and developing new materials to break the conventional limits on solar cell efficiency. He was awarded the Royal Society Kavli Medal and Lecture in 2013.

Research groups


Research Interests

Solution-processible semiconductors: conjugated polymers, semiconductor nanoparticles, perovskite films and nanostructures

Spin physics: control of triplet states in organic materials, singlet fission, electron spin resonance spectroscopy

Spectroscopy: charge transfer and energy transfer at organic/inorganic interfaces

Device physics: optical and electrical modelling of organic LEDs and photovoltaics, physics of injection, transport and recombination.


  • Energy Materials

Key Publications

Vertical cavity biexciton lasing in 2D dodecylammonium lead iodide perovskites, E. P. Booker, M. B. Price, P. J. Budden, H. Abolins, Y. D. I. Redondo, Y. del Valle-Inclan, L. Eyre, I. Nasrallah, R. T. Phillips, R. H. Friend, F. Deschler, N. C. Greenham, Adv. Opt. Mater., 6, 1800616 (2018).

Site-selective measurement of coupled spin pairs in an organic semiconductor, S. L. Bayliss, L. R. Weiss, A. Mitioglu, K. Galkowski, Z. Yang, K. Yunusova, A. Surrente, K. J. Thorley, J. Behrends, R. Bittl, J. E. Anthony, A. Rao, R. H. Friend, P. Plochocka, P. C. M. Christianen, N. C. Greenham, A. D. Chepelianskii, Proc. Nat. Acad. Sci., 115, 5077-5082 (2018).

Strongly exchange-coupled triplet pairs in an organic semiconductor, L. R. Weiss, S. L. Bayliss, F. Kraffert, K. J. Thorley, J. E. Anthony, R. Bittl, R. H. Friend, A. Rao, N. C. Greenham, J. Behrends, Nature Phys., 13, 176-181 (2017)

Lead telluride quantum dot solar cells displaying external quantum efficiencies exceeding 120%, M. L. Boehm, T. C. Jellicoe, M. Tabachnyk, N. J. K. L. Davis, F. Wisnivesky-Rocca-Rivarola, C. Ducati, B. Ehrler, A. A. Bakulin, N. C. Greenham, Nano Lett., 15, 7987-7993 (2015)

Tuneable singlet exciton fission and triplet-triplet annihilation in an orthogonal pentacene dimer, S. Lukman, A. J. Musser, K. Chen, S. Athanasopoulos, C. K. Yong, Z. B. Zeng, Q. Ye, C. Y. Chi, J. M. Hodgkiss, J. S. Wu, R. H. Friend, N. C. Greenham, Adv. Funct. Mater., 25, 5452-5461 (2015)