A Ternary-Mixture-Based Counter Electrode for Quantum-Dot-Sensitized Solar Cells

Dan Li; Zhiqiang Fu; Qiuchen Han; Chen Hsueh Lin; Shufang Gao; Yan Xiong; Ten Chin Wen

doi:10.1021/acsaem.0c01177

A Ternary-Mixture-Based Counter Electrode for Quantum-Dot-Sensitized Solar Cells

Dan Li, Zhiqiang Fu, Qiuchen Han, Chen Hsueh Lin, Shufang Gao, Yan Xiong, Ten Chin Wen

Department of Chemical Engineering

Research output: Contribution to journal › Article

Abstract

A ternary mixture of carbon, copper sulfide, and cobalt sulfide was used to fabricate the counter electrode (CE) in quantum-dot-sensitized solar cells (QDSSCs). The ternary-mixture-based CE achieved much higher energy conversion efficiency than any CE based on the individual material. The mixture and the CE were investigated by photocurrent density-voltage characteristics, X-ray diffraction patterns, electrochemical impedance spectroscopy, and contour line plots. A balanced mix results in enhanced photocurrent and reduced charge transfer resistance at the interface, and this leads to optimized device performance. The highest photoelectric conversion efficiency was 3.73% at a 1:1:1 mass ratio. The efficiency was as high as 3.09% via a corresponding flexible CE.

Original language	English
Pages (from-to)	7121-7128
Number of pages	8
Journal	ACS Applied Energy Materials
Volume	3
Issue number	7
DOIs	https://doi.org/10.1021/acsaem.0c01177
Publication status	Published - 2020 Jul 27

All Science Journal Classification (ASJC) codes

Chemical Engineering (miscellaneous)
Energy Engineering and Power Technology
Electrochemistry
Materials Chemistry
Electrical and Electronic Engineering

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10.1021/acsaem.0c01177

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Li, D., Fu, Z., Han, Q., Lin, C. H., Gao, S., Xiong, Y., & Wen, T. C. (2020). A Ternary-Mixture-Based Counter Electrode for Quantum-Dot-Sensitized Solar Cells. ACS Applied Energy Materials, 3(7), 7121-7128. https://doi.org/10.1021/acsaem.0c01177

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abstract = "A ternary mixture of carbon, copper sulfide, and cobalt sulfide was used to fabricate the counter electrode (CE) in quantum-dot-sensitized solar cells (QDSSCs). The ternary-mixture-based CE achieved much higher energy conversion efficiency than any CE based on the individual material. The mixture and the CE were investigated by photocurrent density-voltage characteristics, X-ray diffraction patterns, electrochemical impedance spectroscopy, and contour line plots. A balanced mix results in enhanced photocurrent and reduced charge transfer resistance at the interface, and this leads to optimized device performance. The highest photoelectric conversion efficiency was 3.73% at a 1:1:1 mass ratio. The efficiency was as high as 3.09% via a corresponding flexible CE.",

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AU - Gao, Shufang

AU - Xiong, Yan

AU - Wen, Ten Chin

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