Biography
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
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.
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)
