Reversible Removal of Intermixed Shallow States by Light Soaking in Multication Mixed Halide Perovskite Films
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Cavendish Laboratory, JJ Thomson Avenue, Cambridge CB3 0HE, United Kingdom
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Publication type: Journal Article
Publication date: 2019-09-05
scimago Q1
wos Q1
SJR: 6.799
CiteScore: 29.6
Impact factor: 18.2
ISSN: 23808195
PubMed ID:
31633033
Materials Chemistry
Chemistry (miscellaneous)
Energy Engineering and Power Technology
Fuel Technology
Renewable Energy, Sustainability and the Environment
Abstract
The highest reported efficiencies of metal halide perovskite (MHP) solar cells are all based on mixed perovskites, such as (FA,MA,Cs)Pb(I1–xBrx)3. Despite demonstrated structural changes induced by light soaking, it is unclear how the charge carrier dynamics are affected across this entire material family. Here, various (FA,MA,Cs)Pb(I1–xBrx)3 perovskite films are light-soaked in nitrogen, and changes in optoelectronic properties are investigated through time-resolved microwave conductivity (TRMC) and optical and structural techniques. To fit the TRMC decay kinetics obtained for pristine (FA,MA,Cs)Pb(I1–xBrx)3 for various excitation densities, additional shallow states have to be included, which are not required for describing TRMC traces of single-cation MHPs. These shallow states can, independently of x, be removed by light soaking, which leads to a reduction in the imbalance between the diffusional motion of electrons and holes. We interpret the shallow states as a result of initially well-intermixed halide distributions, which upon light soaking segregate into domains with distinct band gaps.
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Total citations:
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Citations from 2025:
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Guo D. et al. Reversible Removal of Intermixed Shallow States by Light Soaking in Multication Mixed Halide Perovskite Films // ACS Energy Letters. 2019. Vol. 4. No. 10. pp. 2360-2367.
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Guo D., Andaji Garmaroudi Z., Abdi Jalebi M., Stranks S. D., Savenije T. J. Reversible Removal of Intermixed Shallow States by Light Soaking in Multication Mixed Halide Perovskite Films // ACS Energy Letters. 2019. Vol. 4. No. 10. pp. 2360-2367.
Cite this
RIS
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TY - JOUR
DO - 10.1021/acsenergylett.9b01726
UR - https://doi.org/10.1021/acsenergylett.9b01726
TI - Reversible Removal of Intermixed Shallow States by Light Soaking in Multication Mixed Halide Perovskite Films
T2 - ACS Energy Letters
AU - Guo, Dengyang
AU - Andaji Garmaroudi, Zahra
AU - Abdi Jalebi, Mojtaba
AU - Stranks, Samuel D.
AU - Savenije, Tom J.
PY - 2019
DA - 2019/09/05
PB - American Chemical Society (ACS)
SP - 2360-2367
IS - 10
VL - 4
PMID - 31633033
SN - 2380-8195
ER -
Cite this
BibTex (up to 50 authors)
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@article{2019_Guo,
author = {Dengyang Guo and Zahra Andaji Garmaroudi and Mojtaba Abdi Jalebi and Samuel D. Stranks and Tom J. Savenije},
title = {Reversible Removal of Intermixed Shallow States by Light Soaking in Multication Mixed Halide Perovskite Films},
journal = {ACS Energy Letters},
year = {2019},
volume = {4},
publisher = {American Chemical Society (ACS)},
month = {sep},
url = {https://doi.org/10.1021/acsenergylett.9b01726},
number = {10},
pages = {2360--2367},
doi = {10.1021/acsenergylett.9b01726}
}
Cite this
MLA
Copy
Guo, Dengyang, et al. “Reversible Removal of Intermixed Shallow States by Light Soaking in Multication Mixed Halide Perovskite Films.” ACS Energy Letters, vol. 4, no. 10, Sep. 2019, pp. 2360-2367. https://doi.org/10.1021/acsenergylett.9b01726.