Efficient and low-cost Cu2S-H4SiW12O40/MoS2 counter electrodes in CdS quantum-dot sensitized solar cells with high short-circuit current density

被引：9
作者：
Li, Lixue [1 ]
Jin, Zhanbin [1 ]
Tao, Ran [1 ]
Li, Fengyan [1 ]
Wang, Yinmeng [1 ]
Yang, Xue [1 ]
Xu, Lin [1 ]
机构：
[1] Northeast Normal Univ, Dept Chem, Key Lab Polyoxornetalate Sci, Minist Educ, Changchun 130024, Jilin, Peoples R China
来源：
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 2019年 / 377卷
关键词：
Quantum dots sensitized solar cells; Ounter electrode; Olybdenum sulfide; Polyoxometalates; Cuprous sulfide; LAYER ADSORPTION; COMPOSITE; SULFIDE; MOS2; DYE; TRANSPARENT; PERFORMANCE; GRAPHENE; NANOSTRUCTURES; ELECTROLYTES;
D O I：
10.1016/j.jphotochem.2019.03.044
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The function of Cu2S-H4SiW12O40/MoS2 (Cu2S-SiW12/MoS2) used as counter electrodes to reduce the polysulphide electrolyte in CdS quantum dot-sensitized solar cells (QDSSCs) was studied. The electrochemical impedance spectroscopy (EIS) and Tafel-polarization evaluate that Cu2S-SiW12/MoS2 counter electrodes have good electrocatalytic activity. Under simulated solar light irradiation, the PCE of Cu2S-SiW12/MoS2 counter electrode was increased up to 4.28%, which is higher than those of the QDSSCs featuring Cu2S-MoS2 (2.90%), bare Cu2S (2.45%), SiW12/MoS2 (2.18%) and MoS2 (1.25%) counter electrodes. This enhancement is mainly attributed to rapid electron transport between the conduction band of Cu2S and MoS2 through the electron mediator SiW12, together with the synergistic effect of these components.
引用
收藏
页码：101 / 108
页数：8
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