High electrocatalytic activity of self-standing hollow NiCo2S4 single crystalline nanorod arrays towards sulfide redox shuttles in quantum dot-sensitized solar cells

Junwu Xiao; Xianwei Zeng; Wei Chen; Fei Xiao; Shuai Wang

doi:10.1039/C3CC44242J

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High electrocatalytic activity of self-standing hollow NiCo₂S₄ single crystalline nanorod arrays towards sulfide redox shuttles in quantum dot-sensitized solar cells†

Junwu Xiao,*^a Xianwei Zeng,^b Wei Chen,*^b Fei Xiao^a and Shuai Wang*^a

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* Corresponding authors

^a Department of Chemistry and Chemical Engineering, Hubei Key Laboratory of Material Chemistry and Service Failure, Key Laboratory for Large-Format Battery Materials and System, Ministry of Education, Huazhong University of Science & Technology, Wuhan 430074, PR China
E-mail: chjwxiao@hust.edu.cn, chmsamuel@hust.edu.cn

^b Michael Grätzel Centre for Mesoscopic Solar cells, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, PR China
E-mail: wnlochenwei@hust.edu.cn

Abstract

Self-standing single crystalline NiCo₂S₄ hollow nanorod arrays are prepared for catalysing the polysulfide redox couple in quantum dot-sensitized solar cells (QDSCs). The QDSCs using NiCo₂S₄ as a counter electrode (CE) achieved a power conversion efficiency of 4.22%, which exceeds the performance of QDSCs based on a Pt CE by 38.4%.

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Article information

DOI: https://doi.org/10.1039/C3CC44242J
Article type: Communication
Submitted: 05 Jun 2013
Accepted: 12 Jul 2013
First published: 12 Jul 2013

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Chem. Commun., 2013,49, 11734-11736

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High electrocatalytic activity of self-standing hollow NiCo₂S₄ single crystalline nanorod arrays towards sulfide redox shuttles in quantum dot-sensitized solar cells

J. Xiao, X. Zeng, W. Chen, F. Xiao and S. Wang, Chem. Commun., 2013, 49, 11734 DOI: 10.1039/C3CC44242J

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Chemical Communications