Journal
ELECTROCHIMICA ACTA
Volume 137, Issue -, Pages 700-704Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2014.06.072
Keywords
Quantum dot; Sensitized solar cell; Organic electrolyte; Polymer; CdS
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Funding
- National Nature Science Foundation of China [21301055]
- Natural Science Foundation of Hubei Province [2013CFB037]
- Educational Commission of Hubei Province [Q20132806]
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Quantum dot sensitized solar cells (QDSSCs) based on an organic thiolate/disulfide redox couple (C7H5N4S-/C14H10N8S2 or C2H3N4S-/C4H6N8S2) and a polymer counter electrode [poly (3, 4-ethylenedioxythiophene), PEDOT] were fabricated and their photovoltaic performance were investigated. In CdS QDSSC, the organic C7H5N4S-/C14H10N8S2 electrolyte shows better performance than the polysulfide electrolyte, and the PEDOT counter electrode exhibits higher efficiency than that of the Pt counter electrode and the CoS counter electrode. An efficiency of 1.53% was achieved in this QDSSC. The influences of the morphology and the deposition charge of the PEDOT counter electrodes on the cell performance were also studied. Furthermore, it was found that the C7H5N4S-/C14H10N8S2 redox couple outperformed the C2H3N4S-/C4H6N8S2 redox couple due to reduced electron recombination. (C) 2014 Elsevier Ltd. All rights reserved.
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