Kinetics and energetics of metal halide perovskite conversion reactions at the nanoscale
Authors
Arora, N
Hagenlocher, J
Zakeeruddin, SM
Publication Date
2022Journal Title
Communications Materials
ISSN
2662-4443
Publisher
Springer Science and Business Media LLC
Volume
3
Issue
1
Language
en
Type
Article
This Version
VoR
Metadata
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Arora, N., Greco, A., Meloni, S., Hinderhofer, A., Mattoni, A., Rothlisberger, U., Hagenlocher, J., et al. (2022). Kinetics and energetics of metal halide perovskite conversion reactions at the nanoscale. Communications Materials, 3 (1) https://doi.org/10.1038/s43246-022-00239-1
Description
Funder: DFG (SPP 2196, SCHR 700/38-1)
Funder: Royal Society University Research Fellowship
Abstract
<jats:title>Abstract</jats:title><jats:p>Understanding the kinetics and energetics of metal halide perovskite formation, particularly from the structural point of view at the nanoscale, is important for the advancement of perovskite devices. In particular, insight is needed regarding the mechanisms by which perovskite conversion reactions occur, and their kinetics. Here, we examine the structural evolution of precursor and perovskite phases using in situ synchrotron x-ray scattering. This approach mitigates issues associated with illumination and electron beam-based techniques and allows conclusions to be drawn regarding the kinetics of these reactions. We find that kinetics and grain orientation strongly depend on both the lead halide framework and the nature of the A-cation, with fastest kinetics for MAPbI<jats:sub>3</jats:sub>, followed by FAPbI<jats:sub>3</jats:sub>, and slowest for MAPbBr<jats:sub>3</jats:sub>. Molecular dynamics simulations and density functional theory calculations further reveal that these reactions are diffusion-controlled with a hopping time of 5-400 s, corroborating experimental findings.</jats:p>
Keywords
Article, /639/301/357, /639/638/298, /639/301/1034, article
Sponsorship
Royal Society (URF\R1\201696)
Engineering and Physical Sciences Research Council (EP/P032591/1)
Identifiers
s43246-022-00239-1, 239
External DOI: https://doi.org/10.1038/s43246-022-00239-1
This record's URL: https://www.repository.cam.ac.uk/handle/1810/336269
Rights
Licence:
http://creativecommons.org/licenses/by/4.0/
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