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Royal Society of Chemistry, Journal of Materials Chemistry A: materials for energy and sustainability, 47(3), p. 24121-24127

DOI: 10.1039/c5ta06458a

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

This paper is available in a repository.
This paper is available in a repository.

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Abstract

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.