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BibTex format

@article{Westbrook:2021,
author = {Westbrook, R and Macdonald, T and Weidong, X and Luis, L and Jose, M-B and Tracey, C and Haque, S},
journal = {Journal of the American Chemical Society},
pages = {12230--12243},
title = {Lewis base passivation mediates charge transfer at perovskite heterojunctions},
url = {http://hdl.handle.net/10044/1/90858},
volume = {143},
year = {2021}
}

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TY  - JOUR
AB  - Understanding interfacial charge transfer processes such as trap-mediated recombinationand injection into charge transport layers (CTLs) is crucial for the improvement of perovskitesolar cells. Herein, we reveal that the chemical binding of charge transport layers toCH3NH3PbI3 defect sites is an integral part of the interfacial charge injection mechanism inboth n-i-p and p-i-n architectures. Specifically, we use a mixture of optical and X-Rayphotoelectron spectroscopy to show that binding interactions occur via Lewis baseinteractions between electron donating moieties on hole transport layers and theCH3NH3PbI3 surface. We then correlate the extent of binding with an improvement in theyield and longer lifetime of injected holes with transient absorption spectroscopy. Ourresults show that passivation-mediated charge transfer has been occurring undetected insome of the most common perovskite configurations and elucidate a key design rule for thechemical structure of next-generation CTLs.
AU  - Westbrook,R
AU  - Macdonald,T
AU  - Weidong,X
AU  - Luis,L
AU  - Jose,M-B
AU  - Tracey,C
AU  - Haque,S
EP  - 12243
PY  - 2021///
SN  - 0002-7863
SP  - 12230
TI  - Lewis base passivation mediates charge transfer at perovskite heterojunctions
T2  - Journal of the American Chemical Society
UR  - http://hdl.handle.net/10044/1/90858
VL  - 143
ER  -

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