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The Johnston Group is a research group within the sub-department of Condensed Matter Physics, which is part of the sub-faculty of Physics at the University of Oxford. Our current research may be divided into three themes (i) Semiconductor nanowires (ii) Terahertz photonic technologies and (iii) Vapour deposited Perovskite materials for photovoltaic applications.

For enquires about the group please contact:
Prof Michael B. Johnston (group leader),
Clarendon Laboratory, Parks Road, Oxford, OX1 3PU, United Kingdom.

Latest Publications

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Impurity Tracking Enables Enhanced Control and Reproducibility of Hybrid Perovskite Vapor Deposition
Borchert et al. ACS Appl. Mater. Interfaces, 11:28851-28857 (Jul 2019)
[ pdf ][ DOI:10.1021/acsami.9b07619 ]
Our results indicate that as long as precursor deposition rates are well controlled, physical vapor deposition will allow high solar cell device yields even if the purity of precursors changes from one run to another.

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Solution-processed all-perovskite multi-junction solar cells
McMeekin et al. Joule, 3:387-401 (Feb 2019)
[ pdf ][ DOI:10.1016/j.joule.2019.01.007 ]

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Temperature-dependent refractive index of quartz at terahertz frequencies
Davies et al. J. Infrared Millim. Terahertz Waves, 39:1236-1248 (Dec 2018)
[ pdf ][ DOI:10.1007/s10762-018-0538-7 ]

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Raman spectrum of the organic-inorganic halide perovskite ch3nh3pbi3 from first principles and high-resolution low-temperature raman measurements
Perez-Osorio et al. J. Phys. Chem. C, 122:21703-21717 (Sep 2018)
[ pdf ][ DOI:10.1021/acs.jpcc.8b04669 ]

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High electron mobility and insights into temperature-dependent scattering mechanisms in inassb nanowires
Boland et al. Nano Lett., 18:3703-3710 (Jun 2018)
[ pdf ][ DOI:10.1021/acs.nanolett.8b00842 ]
THz and Raman probes reveal very high electron mobility in InAsSb nanowires, and temperature dependent THz measurement reveal charge-carrier scattering mechanisms

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Bimolecular recombination in methylammonium lead triiodide perovskite is an inverse absorption process
Davies et al. Nat. Commun., 9:293 (Jan 2018)
[ pdf ][ DOI:10.1038/s41467-017-02670-2 ]
We show that bimolecular charge-carrier recombination in methylammonium lead triiodide perovskite can be fully explained as the inverse process of absorption.
Group members March 2017