화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.62, 185-191, June, 2018
DOI10.1016/j.jiec.2017.12.056  Export Citation
Electrodeposition of Cu2S nanoparticles on fluorine-doped tin oxide for efficient counter electrode of quantum-dot-sensitized solar cells
Jia Wang, Md. Mahbubur Rahman1, Chuangye Ge, and Jae-Joon Lee†
  • Department of Energy & Materials Engineering, Dongguk University, Seoul 04620, Korea
  • 1Nanotechnology Research Center & Department of Applied Life Science, College of Biomedical and Health Science, Konkuk University, Chungju 27478, Korea
E-mail:
This study demonstrated a single-step potentiostatic method for the electrodeposition of copper (I) sulfide (Cu2S) nanoparticles onto fluorine-doped tin oxide (FTO) electrode from an aqueous solution of CuCl2 and thiourea (TU) to develop counter electrodes (CEs) for quantum-dot sensitized solar cells (QDSSCs). The homogeneously distributed and optimized Cu2S-CE exhibited an improved catalytic activity in the reduction of polysulfide (S2-/Sn 2-) electrolyte, which resulted in a power conversion efficiency (PCE) of 4.24% with a short-circuit current density (Jsc), open-circuit voltage (Voc), and fill factor (FF) of 19.60 mA/cm2, 0.445 V, and 48.62%, respectively, for PbS/CdS/ZnS QDs sensitized QDSSCs, while the Pt counterpart exhibited a PCE of 1.17%. The superior photovoltaic performance of this Cu2S.CEs based QDSSC compared to the Pt counterpart is due to its greater electrocatalytic activity and lower charge transfer resistance (RCT) at the Cu2S-CEs/(S2-/Sn 2-) interface. This strategy provides an effective, low-cost, and non-Pt electrode for QDSSCs, which is promising for other electrochemical applications.
Keywords:Electrodeposition;Copper(I) sulfide;Counter electrodes;Electrocatalytic;Quantum-dot sensitized solar cells
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