1. An efficient and transparent copper sulfide nanosheet film counter electrode for bifacial quantum dot-sensitized solar cells.
- Author
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Ke, Weijun, Fang, Guojia, Lei, Hongwei, Qin, Pingli, Tao, Hong, Zeng, Wei, Wang, Jing, and Zhao, Xingzhong
- Subjects
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DYE-sensitized solar cells , *COPPER sulfide , *SHEET metal , *THIN films , *QUANTUM dots , *ELECTROLYTES , *ELECTRODES , *LOW temperatures - Abstract
Abstract: Copper sulfide (CuS) with nanosheet structure has been synthesized at a low temperature in situ on copper (Cu) film coated fluorine-doped tin oxide glass and bifacial quantum dot-sensitized solar cells (QDSSCs) were herein developed by using these CuS as counter electrodes (CEs). CuS is an environmental compatible and low toxic material. The obtained two-dimensional CuS nanosheet film presents high carrier mobility and exhibits highly catalytic performance for the polysulfide-based electrolyte. The QDSSC based on a CuS CE presents a power conversion efficiency (PCE) of 3.65% by optimizing the thickness of the Cu film under front illumination. The QDSSC based on a CuS CE prepared with a 200 nm thick Cu film shows a very close PCE under front and rear illuminations in which the values are as high as 2.70% and 2.40%, respectively. All the PCEs of the CuS CEs are much higher than that of the Pt CE (1.34%). [Copyright &y& Elsevier]
- Published
- 2014
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