期刊
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
卷 160, 期 9, 页码 H624-H629出版社
ELECTROCHEMICAL SOC INC
DOI: 10.1149/2.107309jes
关键词
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资金
- WNLO
- 973 Program of China [2013CB922104, 2011CBA00703]
- NSFC [21103057, 21161160445, 20903030, 21173091]
- Natural Science Foundation of Hubei Province [2011CDB04]
- Fundamental Research Funds for the Central Universities [HUST: 2011TS021, 2011QN040, 2012YQ027]
- CME
- Program of New Century Excellent Talents in University [NCET-10-0416]
- Scientific Research Foundation for the Returned Overseas Chinese Scholars
In this study, we report on electrochemically deposited CoS onto ITO conducting glass substrates as counter electrodes for efficient quantum dot-sensitized solar cells (QDSCs). The CoS/ITO counter electrodes show remarkable electrocatalytic activity for the reduction of polysulfide compared to that of the CoS/ITO counter electrodes fabricated by chemical bath deposition (CBD) or the widely used thermal platinized FTO glass electrode. A CdS/CdSe based QDSC in combination with this type of counter electrode shows appreciated power conversion efficiency (PCE) of 5.2%, accompanied by 0.60 in fill factor under 1 sun illumination (100 mW cm(-2) AM 1.5G), which is superior than that of CoS/ITO (fabricated by CBD) based cell (PCE 4.06%, FF 0.55) and Pt/FTO based cell (PCE 3.64%, FF 0.52). The augmented photovoltaic performance of the CdS/CdSe based QDSC may be attributed to a small charger-transfer resistance for the reduction of polysulfide on the counter electrode. (C) 2013 The Electrochemical Society. All rights reserved.
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