The role of Mott–Schottky heterojunctions in PtCo–Cu2ZnGeS4 as counter electrodes in dye-sensitized solar cells

Shoushuang Huang; Qingquan He; Jiantao Zai; Min Wang; Xiaomin Li; Bo Li; Xuefeng Qian

doi:10.1039/C5CC02584B

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The role of Mott–Schottky heterojunctions in PtCo–Cu₂ZnGeS₄ as counter electrodes in dye-sensitized solar cells†

Shoushuang Huang,‡^a Qingquan He,‡^a Jiantao Zai,

*^a Min Wang,^a Xiaomin Li,^a Bo Li^a and Xuefeng Qian*^a

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* Corresponding authors

^a Shanghai Electrochemical Energy Devices Research Center, School of Chemistry and Chemical Engineering and State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai, P. R. China
E-mail: zaijiantao@sjtu.edu.cn, xfqian@sjtu.edu.cn

Abstract

Metastable wurtzstannite Cu₂ZnGeS₄ (CZGS) nanocrystals were synthesized via a hot-injection method and then used as matrixes to fabricate PtCo–CZGS heterostructured nano-particles. The formed Mott–Schottky heterojunctions in the hybrid nanocrystals promote the transfer of electrons from semiconducting CZGS to metallic PtCo, which accelerates the reduction of I₃⁻ to I⁻ in dye-sensitized solar cells.

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Article information

DOI: https://doi.org/10.1039/C5CC02584B
Article type: Communication
Submitted: 29 Mar 2015
Accepted: 21 Apr 2015
First published: 21 Apr 2015

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Chem. Commun., 2015,51, 8950-8953

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The role of Mott–Schottky heterojunctions in PtCo–Cu₂ZnGeS₄ as counter electrodes in dye-sensitized solar cells

S. Huang, Q. He, J. Zai, M. Wang, X. Li, B. Li and X. Qian, Chem. Commun., 2015, 51, 8950 DOI: 10.1039/C5CC02584B

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