NiO nanosheets as efficient top hole transporters for carbon counter electrode based perovskite solar cells

Zonghao Liu, Meng Zhang, Xiaobao Xu, Fensha Cai, Huailiang Yuan, Lingling Bu, Wenhui Li, Aili Zhu, Zhixin Zhao, Mingkui Wang, Yi-Bing Cheng, Hongshan He

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Herein, we present fully printable carbon electrode based perovskite solar cells using highly crystalline NiO nanosheets as top hole transport layers, mesoporous TiO2 nanoparticles as a bottom electron transport layer and ZrO2 as an intermediate spacer layer, respectively. Time-resolved photoluminescence decay measurements, electron impedance spectroscopy and transient photovoltage decay measurements have revealed that the NiO nanosheets as top hole transporters exhibit superior charge collection efficiency and a prolonged charge lifetime. As a result, an impressive power conversion efficiency of 14.2% is achieved under standard testing conditions.
Original languageEnglish
Pages (from-to)24121 - 24127
Number of pages7
JournalJournal of Materials Chemistry A
Issue number47
Publication statusPublished - 2015

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