Imperial College London
Alternate

ProfessorSaifHaque

Faculty of Natural Sciences, Department of Chemistry

Professor of Chemistry
 
 
 
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Contact

 

+44 (0)20 7594 1886s.a.haque

 
 
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Location

 

110HMolecular Sciences Research HubWhite City Campus

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Summary

 

Publications

Citation

BibTex format

@article{Aristidou and Eames:2017:10.1039/C7TA06841G,
author = {Aristidou and Eames, C and Islam, MS and Haque, SA},
doi = {10.1039/C7TA06841G},
journal = {Journal of Materials Chemistry A},
pages = {25469--25475},
title = {Insights into the increased degradation rate of CH3NH3PbI3 solar cells in combined water and O2 environments},
url = {http://dx.doi.org/10.1039/C7TA06841G},
volume = {5},
year = {2017}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Halide perovskites offer low cost and high efficiency solar cell materials but serious issues related to air and moisture stability remain. In this study we show, using UV-vis, fluorescence and time of flight secondary ion mass spectrometry (ToF-SIMS) techniques, that the degradation of methylammonium lead iodide solar cells is significantly accelerated when both air and moisture are present in comparison to when just air or moisture is present alone. Using ab initio computational techniques we identify the thermodynamic driving force for the enhanced reactivity and highlight the regions of the photoexcited material that are the most likely reaction centres. We suggest that water catalyses the reaction by stabilising the reactive superoxide species, enabling them to react with the methylammonium cation.
AU  - Aristidou
AU  - Eames,C
AU  - Islam,MS
AU  - Haque,SA
DO  - 10.1039/C7TA06841G
EP  - 25475
PY  - 2017///
SN  - 2050-7496
SP  - 25469
TI  - Insights into the increased degradation rate of CH3NH3PbI3 solar cells in combined water and O2 environments
T2  - Journal of Materials Chemistry A
UR  - http://dx.doi.org/10.1039/C7TA06841G
UR  - http://hdl.handle.net/10044/1/54131
VL  - 5
ER  -
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