ORCID Profile
0000-0003-2925-172X
Current Organisation
University of Oxford
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Publisher: American Physical Society (APS)
Date: 28-06-2021
Publisher: American Chemical Society (ACS)
Date: 05-05-2022
Publisher: American Chemical Society (ACS)
Date: 06-11-2015
Publisher: American Chemical Society (ACS)
Date: 28-04-2023
DOI: 10.1021/JACS.3C01531
Publisher: Springer Science and Business Media LLC
Date: 18-01-2018
DOI: 10.1038/S41467-017-02670-2
Abstract: Photovoltaic devices based on metal halide perovskites are rapidly improving in efficiency. Once the Shockley–Queisser limit is reached, charge-carrier extraction will be limited only by radiative bimolecular recombination of electrons with holes. Yet, this fundamental process, and its link with material stoichiometry, is still poorly understood. Here we show that bimolecular charge-carrier recombination in methylammonium lead triiodide perovskite can be fully explained as the inverse process of absorption. By correctly accounting for contributions to the absorption from excitons and electron-hole continuum states, we are able to utilise the van Roosbroeck–Shockley relation to determine bimolecular recombination rate constants from absorption spectra. We show that the sharpening of photon, electron and hole distribution functions significantly enhances bimolecular charge recombination as the temperature is lowered, mirroring trends in transient spectroscopy. Our findings provide vital understanding of band-to-band recombination processes in this hybrid perovskite, which comprise direct, fully radiative transitions between thermalized electrons and holes.
Publisher: American Chemical Society (ACS)
Date: 31-01-2017
DOI: 10.1021/ACS.JPCLETT.6B02682
Abstract: A
Publisher: American Chemical Society (ACS)
Date: 29-10-2015
Location: United States of America
Location: United Kingdom of Great Britain and Northern Ireland
No related grants have been discovered for Marina Filip.