Cobalt selenide/tin selenide hybrid used as a high efficient counter electrode for dye-sensitized solar cells
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- 作者：Jinbiao Jia ; Jihuai Wu ; Jia Dong ; Pei Zhou…
- 刊名：Journal of Materials Science: Materials in Electronics
- 出版年：2015
- 出版时间：December 2015
- 年：2015
- 卷：26
- 期：12
- 页码：10102-10108
- 全文大小：971 KB
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Jihuai Wu (1)
Jia Dong (1)
Pei Zhou (1)
Shaoyun Wu (1)
Jianming Lin (1)
1. Engineering Research Centre of Environment-Friendly Functional Materials, Ministry of Education, Institute of Materials Physical Chemistry, Huaqiao University, Quanzhou, 362021, China - 刊物类别：Chemistry and Materials Science
- 刊物主题：Chemistry
Optical and Electronic Materials
Characterization and Evaluation Materials - 出版者：Springer New York
- ISSN：1573-482X
文摘
Cobalt selenide/tin selenide (CoSe/SnSe) hybrid is successfully synthesized via a facile solvothermal method and used as an efficient Pt-free counter electrode (CE) for dye-sensitized solar cells (DSSCs). Field emission scanning electron microscopy observes that CoSe/SnSe hybrid is made up of nanosheets and nanoparticles; the nanosheets are CoSe, while the nanoparticles are SnSe. Cyclic voltammogram measurement indicates that CoSe/SnSe hybrid electrodes have larger current density than CoSe electrode and Pt electrode. Electrochemical impedance spectroscopy shows that the 3CoSe/SnSe hybrid has low charge-transfer resistance of 1.03 Ω cm2. Under simulated solar light irradiation with intensity of 100 mW cm? (AM 1.5), the DSSC based on the Co3SnSe4 hybrid CE achieves a power conversion efficiency of 7.71 %, which is higher than that the DSSC based on conventional Pt CE (6.89 %). The DSSCs with all as-prepared CoSe/SnSe hybrid CEs exhibit better photovoltaic performance than the DSSC with conventional Pt CE.