Journal
SOLAR ENERGY
Volume 151, Issue -, Pages 61-67Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.solener.2017.05.036
Keywords
Dye-sensitized solar cells; Cobalt diselenide; Counter electrode; Electrochemical deposition
Categories
Funding
- National Natural Science Foundation of China [91422301, 51472094, 61474047, 21301060, 61306077, U1205112]
- Cultivation Program for Postgraduate in Scientific Research Innovation Ability of Huaqiao University [1511102004]
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Cobalt diselenide (CoSe2) is endowed with excellent and stable photoelectrochemical properties. However, the preparations of CoSe2 usually need high pressure, high temperature, long reaction time or special devices. Here, CoSe2 counter electrodes are prepared by a facile electrochemical deposition method and controlling different deposition voltage. The influence of deposition voltage on the film quality and the performance of dye-sensitized solar cells is investigated, and the CoSe2 counter electrode with -1.1 V deposition voltage achieve a best power conversion efficiency of 10.17%, which has a 21.9% increase compared to the solar cell based on platinum counter electrode (8.35%). The impressive efficiency together with facile preparation highlights the potential for substitute for the noble metal platinum. (C) 2017 Elsevier Ltd. All rights reserved.
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