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Issue 21, 2020
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Interfacial modification of various alkali metal cations in perovskite solar cells and their influence on photovoltaic performance

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Abstract

The electron transport layer (ETL) between the perovskite material and cathode plays an important role in planar perovskite solar cells. In this study, an alkali metal salt solution was be used to modify the surface of the SnO2 electron transport layer to optimize electron transport. The IV characteristic measurements and UV-Vis spectroscopy were used to investigate whether introducing the interface modification can increase the electron coupling and effectively extract the energy lever of electrons. The results indicated that the interfacial modification could reduce the trap density of states and increase the mobility of the SnO2 thin films. The efficient defect passivation significantly suppressed the recombination at the SnO2/perovskite interface. This method aims at passivation using simple and low-cost inorganic material poles.

Graphical abstract: Interfacial modification of various alkali metal cations in perovskite solar cells and their influence on photovoltaic performance

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Supplementary files

Article information


Submitted
23 Dec 2019
Accepted
23 Apr 2020
First published
27 Apr 2020

New J. Chem., 2020,44, 8902-8909
Article type
Paper

Interfacial modification of various alkali metal cations in perovskite solar cells and their influence on photovoltaic performance

Y. Huang, S. Li, C. Wu, S. Wang, C. Wang and R. Ma, New J. Chem., 2020, 44, 8902
DOI: 10.1039/C9NJ06342K

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