An efficient and transparent copper sulfide nanosheet film counter electrode for bifacial quantum dot-sensitized solar cells
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- 作者：Weijun Ke ; Guojia Fang ; Hongwei Lei ; Pingli Qin ; Hong Tao ; Wei Zeng ; Jing Wang ; Xingzhong Zhao
- 关键词：Copper sulfide ; Counter electrode ; Two-dimensional material ; Bifacial quantum dot-sensitized solar cells
- 刊名：Journal of Power Sources
- 出版年：15 February, 2014
- 年：2014
- 卷：248
- 期：Complete
- 页码：809-815
- 全文大小：2175 K
文摘
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聽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%).