Please use this identifier to cite or link to this item:
|Title:||The bright side and dark side of hybrid organic–inorganic perovskites||Authors:||Walukiewicz, Wladek
Sherburne, Matthew P.
Sum, Tze Chien
Ager, Joel W.
Asta, Mark D.
|Keywords:||Science::Physics::Optics and light||Issue Date:||2020||Source:||Walukiewicz, W., Wang, S., Wu, X., Li, R., Sherburne, M. P., Wu, B., ... Asta, M. D. (2020). The bright side and dark side of hybrid organic–inorganic perovskites. The Journal of Physical Chemistry C, 124(50), 27340–27355. doi:10.1021/acs.jpcc.0c08263||Project:||M4082480
|Journal:||The Journal of Physical Chemistry C||Abstract:||The previously developed bistable amphoteric native defect (BAND) model is used for a comprehensive explanation of the unique photophysical properties and for understanding the remarkable performance of perovskites as photovoltaic materials. It is shown that the amphoteric defects in donor (acceptor) configuration capture a fraction of photoexcited electrons (holes) dividing them into two groups: higher energy bright and lower energy dark electrons (holes). The spatial separation of the dark electrons and the dark holes and the k-space separation of the bright and the dark charge carriers reduce electron hole recombination rates, emulating the properties of an ideal photovoltaic material with a balanced, spatially separated transport of electrons and holes. The BAND model also offers a straightforward explanation for the exceptional insensitivity of the photovoltaic performance of polycrystalline perovskite films to structural and optical inhomogeneities. The blue-shifted radiative recombination of bright electrons and holes results in a large anti-Stokes effect that provides a quantitative explanation for the spectral dependence of the laser cooling effect measured in perovskite platelets.||URI:||https://hdl.handle.net/10356/145440||ISSN:||1932-7447||DOI:||10.1021/acs.jpcc.0c08263||DOI (Related Dataset):||10.21979/N9/9LBMRG||Rights:||This document is the Accepted Manuscript version of a Published Work that appeared in final form in The Journal of Physical Chemistry C, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acs.jpcc.0c08263||Fulltext Permission:||embargo_20211224||Fulltext Availability:||With Fulltext|
|Appears in Collections:||SPMS Journal Articles|
Files in This Item:
|The Bright Side and the Dark Side of Hybrid Organic Inorganic Perovskites.pdf|
|2.18 MB||Adobe PDF||Under embargo until Dec 24, 2021|
|The Bright Side and the Dark Side of Hybrid Organic Inorganic Perovskites -- SI.pdf|
|787.48 kB||Adobe PDF||Under embargo until Dec 24, 2021|
Updated on Apr 18, 2021
Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.