Facile synthesis of Bi2S3–C composite microspheres as low-cost counter electrodes for dye-sensitized solar cells

Xue-Qin Zuo; Xiao Yang; Lei Zhou; Bo Yang; Guang Li; Huai-Bao Tang; Hai-Jun Zhang; Ming-Zai Wu; Yong-Qing Ma; Shao-Wei Jin

doi:10.1039/C4RA08284B

Facile synthesis of Bi₂S₃–C composite microspheres as low-cost counter electrodes for dye-sensitized solar cells†

Xue-Qin Zuo,^a Xiao Yang,^a Lei Zhou,^a Bo Yang,^a Guang Li,*^ab Huai-Bao Tang,^a Hai-Jun Zhang,^a Ming-Zai Wu,^ab Yong-Qing Ma^ab and Shao-Wei Jin^ab

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^a School of Physics and Materials Science, Anhui University, Hefei 230601, China

^b Anhui Key Laboratory of Information Materials and Devices, Hefei 230601, China
E-mail: liguang1971@ahu.edu.cn
Fax: +86-0551-63861992
Tel: +86-0551-63861867

Abstract

Porous bismuth sulfide–carbon (Bi₂S₃–C) composite microspheres were synthesized via a facile solvothermal route and served as a low-cost counter electrode material for Pt-free dye-sensitized solar cells (DSSCs). The electrochemical performance analysis indicates that the Bi₂S₃–C electrode has lower charge transfer resistance at the electrolyte/electrode interface, smaller Nernst diffusion impedance of iodide in electrolyte and higher catalytic ability than the bare Bi₂S₃ electrode. After optimization of the content of carbon, the DSSC with the Bi₂S₃–C counter electrode exhibited an excellent power conversion efficiency of 6.72%, which is comparable to that of the Pt-based DSSC (6.74%).

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Facile synthesis of Bi₂S₃–C composite microspheres as low-cost counter electrodes for dye-sensitized solar cells†

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Facile synthesis of Bi₂S₃–C composite microspheres as low-cost counter electrodes for dye-sensitized solar cells

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