Journal
NANOSCALE RESEARCH LETTERS
Volume 5, Issue 6, Pages 986-990Publisher
SPRINGEROPEN
DOI: 10.1007/s11671-010-9592-3
Keywords
Quantum dot; Sensitized solar cell; Composite; Flexible; Carbon electrode; Cu2S; CdS/CdSe
Funding
- National Science Fund for Distinguished Young Scholars [20725311]
- National Natural Science Foundation of China [20673141, 20703063, 20873178]
- Strategic China-Japan (NSFC-JST) [20721140647]
- National Basic Research Program of China [2006CB202606]
- National High Technology Research and Development Program [2006AA03Z341]
- Chinese Academy of Sciences
- JST PRESTO
- Ministry of Education, Culture, Sports, Science and Technology of the Japanese Government [21310073]
- Grants-in-Aid for Scientific Research [21310073] Funding Source: KAKEN
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Cu2S nanocrystal particles were in situ deposited on graphite paper to prepare nano-sulfide/carbon composite counter electrode for CdS/CdSe quantum-dot-sensitized solar cell (QDSC). By optimization of deposition time, photovoltaic conversion efficiency up to 3.08% was obtained. In the meantime, this composite counter electrode was superior to the commonly used Pt, Au and carbon counter electrodes. Electrochemical impedance spectra further confirmed that low charge transfer resistance at counter electrode/electrolyte interface was responsible for this, implied the potential application of this composite counter electrode in high-efficiency QDSC.
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