Single sub-microwire solar cells based on the CdS-Cu2S and CdS-ZnS core-shell heterostructures |
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| Authors: | Yunfeng Zhao Keqiang Chen Qiaohui Zhong Shuang Yang and Yueli Liu |
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| Institution: | School of Science, and State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Whuan 430070, China;School of Science, and State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Whuan 430070, China;School of Science, and State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Whuan 430070, China;School of Science, and State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Whuan 430070, China;School of Science, and State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Whuan 430070, China |
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| Abstract: | CdS sub-microwires with diameter of 200 nm were synthesized by a physical evaporation, Cu_2S and ZnS were decorated on CdS sub-microwires as shells by immersing the CdS core into Cu~+, Zn~(2+) and S~(2-)solutions,respectively. The single core-shell sub-microwires were separated individually on the regular Au pattern by the photolithography technique, and then two ends of the sub-microwires were well contacted with Au electrodes by using the electron beam lithography. The photovoltaic efficiencies of 4.54% and 1.40% were achieved by CdS-Cu_2S and CdS-ZnS core-shell heterostructure under AM 1.5 G illumination, respectively. |
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| Keywords: | Solar energy materials Single core-shell sub-microwires Photovoltaic efficiency Physical vapor deposition |
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