The Role of Oxygen in the Degradation of Methylammonium Lead Trihalide Perovskite Photoactive Layers
Nicholas Aristidou
1
,
I. Sánchez-Molina
1
,
Thana Chotchuangchutchaval
1
,
Michael Brown
1
,
LUIS MARTÍNEZ
1
,
Thomas Rath
1
,
Saif A. Haque
1
Publication type: Journal Article
Publication date: 2015-05-27
scimago Q1
wos Q1
SJR: 5.550
CiteScore: 27.6
Impact factor: 16.9
ISSN: 14337851, 15213773
PubMed ID:
26014846
General Chemistry
Catalysis
Abstract
In this paper we report on the influence of light and oxygen on the stability of CH3 NH3 PbI3 perovskite-based photoactive layers. When exposed to both light and dry air the mp-Al2 O3 /CH3 NH3 PbI3 photoactive layers rapidly decompose yielding methylamine, PbI2 , and I2 as products. We show that this degradation is initiated by the reaction of superoxide (O2 (-) ) with the methylammonium moiety of the perovskite absorber. Fluorescent molecular probe studies indicate that the O2 (-) species is generated by the reaction of photoexcited electrons in the perovskite and molecular oxygen. We show that the yield of O2 (-) generation is significantly reduced when the mp-Al2 O3 film is replaced with an mp-TiO2 electron extraction and transport layer. The present findings suggest that replacing the methylammonium component in CH3 NH3 PbI3 to a species without acid protons could improve tolerance to oxygen and enhance stability.
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851
Total citations:
851
Citations from 2025:
61
(7.17%)
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Aristidou N. et al. The Role of Oxygen in the Degradation of Methylammonium Lead Trihalide Perovskite Photoactive Layers // Angewandte Chemie - International Edition. 2015. Vol. 54. No. 28. pp. 8208-8212.
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Aristidou N., Sánchez-Molina I., Chotchuangchutchaval T., Brown M., MARTÍNEZ L., Rath T., Haque S. A. The Role of Oxygen in the Degradation of Methylammonium Lead Trihalide Perovskite Photoactive Layers // Angewandte Chemie - International Edition. 2015. Vol. 54. No. 28. pp. 8208-8212.
Cite this
RIS
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TY - JOUR
DO - 10.1002/anie.201503153
UR - https://doi.org/10.1002/anie.201503153
TI - The Role of Oxygen in the Degradation of Methylammonium Lead Trihalide Perovskite Photoactive Layers
T2 - Angewandte Chemie - International Edition
AU - Aristidou, Nicholas
AU - Sánchez-Molina, I.
AU - Chotchuangchutchaval, Thana
AU - Brown, Michael
AU - MARTÍNEZ, LUIS
AU - Rath, Thomas
AU - Haque, Saif A.
PY - 2015
DA - 2015/05/27
PB - Wiley
SP - 8208-8212
IS - 28
VL - 54
PMID - 26014846
SN - 1433-7851
SN - 1521-3773
ER -
Cite this
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@article{2015_Aristidou,
author = {Nicholas Aristidou and I. Sánchez-Molina and Thana Chotchuangchutchaval and Michael Brown and LUIS MARTÍNEZ and Thomas Rath and Saif A. Haque},
title = {The Role of Oxygen in the Degradation of Methylammonium Lead Trihalide Perovskite Photoactive Layers},
journal = {Angewandte Chemie - International Edition},
year = {2015},
volume = {54},
publisher = {Wiley},
month = {may},
url = {https://doi.org/10.1002/anie.201503153},
number = {28},
pages = {8208--8212},
doi = {10.1002/anie.201503153}
}
Cite this
MLA
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Aristidou, Nicholas, et al. “The Role of Oxygen in the Degradation of Methylammonium Lead Trihalide Perovskite Photoactive Layers.” Angewandte Chemie - International Edition, vol. 54, no. 28, May. 2015, pp. 8208-8212. https://doi.org/10.1002/anie.201503153.