Layered perovskites in solar cells: structure, optoelectronic properties, and device design

Sirbu, D., Balogun, F. H., Milot, R. L. and Docampo, P. (2021) Layered perovskites in solar cells: structure, optoelectronic properties, and device design. Advanced Energy Materials, 11(24), 2003877. (doi: 10.1002/aenm.202003877)

[img] Text
238265.pdf - Published Version
Available under License Creative Commons Attribution.



Layered hybrid perovskites (LPKs) have emerged as a viable solution to address perovskite stability concerns and enable their implementation in wide-scale energy harvesting. Yet, although more stable, the performance of devices incorporating LPKs still lags behind that of state-of-the-art, multi-cation perovskite materials. This is typically assigned to their poor charge transport, currently caused by the choice of cations used within the organic layer. On balance, a compromise between efficiency and stability is sought, involving careful control of phase purity and distribution, interfaces and energy/charge transfer processes. Further progress is hindered by the difficulty in identifying the fundamental optoelectronic processes in these materials. Here, the high exciton binding energy of LPKs lead to the formation of multiple photoexcited species, which greatly complicate measurement interpretation. In this light, this review gives an overview of how complementary measurement techniques must be used to separate the contributions from the different species in order to identify device bottlenecks, and become a useful tool to narrow down the limitless list of organic cations. A move away from making compromises to mitigate the impact of poor charge transport is required. The root of the problem must be addressed instead through rational design of the interlayer cations.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Docampo, Dr Pablo
Authors: Sirbu, D., Balogun, F. H., Milot, R. L., and Docampo, P.
College/School:College of Science and Engineering > School of Chemistry
Journal Name:Advanced Energy Materials
ISSN (Online):1614-6840
Published Online:19 May 2021
Copyright Holders:Copyright © 2021 The Authors
First Published:First published in Advanced Energy Materials 11(24): 2003877
Publisher Policy:Reproduced under a Creative Commons License

University Staff: Request a correction | Enlighten Editors: Update this record

Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
310679Hybrid Perovskite Heterojunctions (AoE ENG Materials & Manufacturing)Pablo DocampoEngineering and Physical Sciences Research Council (EPSRC)EP/T010568/1Chemistry