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Author Liu, Huan ♦ Zhang, Gengmin ♦ Yin, Jianbo ♦ Liang, Jia ♦ Sun, Wentao ♦ Shen, Ziyong
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword MATERIALS SCIENCE ♦ NANOSCIENCE AND NANOTECHNOLOGY ♦ AQUEOUS SOLUTIONS ♦ CADMIUM NITRATES ♦ CADMIUM SULFIDES ♦ DOPED MATERIALS ♦ ELECTROCHEMISTRY ♦ FABRICATION ♦ MORPHOLOGY ♦ PHOTOANODES ♦ PHOTOVOLTAIC EFFECT ♦ QUANTUM DOTS ♦ SOLAR CELLS ♦ SOL-GEL PROCESS ♦ SUBSTRATES ♦ TIN OXIDES ♦ UROTROPIN ♦ ZINC NITRATES ♦ ZINC OXIDES
Abstract Zinc oxide (ZnO) nanostructures sensitized with cadmium sulfide quantum dots (CdS QDs) were fabricated using a simple and inexpensive solution method. ZnO nanostructures, in the form of either nanocones or nanorods, were first grown directly from fluorine-doped tin oxide (FTO) substrates in aqueous solutions of zinc nitrate (Zn(NO{sub 3}){sub 2}) and hexamethylenetetramine (HMTA, C{sub 6}H{sub 12}N{sub 4}) under external voltages. Then, CdS QDs were attached to these ZnO nanostructures via reactions in the mixed aqueous solutions of cadmium nitrate (Cd(NO{sub 3}){sub 2}) and thioacetamide (C{sub 2}H{sub 5}NS). Photovoltaic responses were obtained from the quantum dot sensitized solar cells (QDSSCs) in which these CdS QD-covered ZnO nanostructures were employed as the photoanodes. The morphologies of the ZnO nanostructures, which could be effectively modulated via the substrate location in the solutions during the fabrication, were found to have played an important role in determining the properties of the QDSSCs.
ISSN 00255408
Educational Use Research
Learning Resource Type Article
Publisher Date 2015-01-15
Publisher Place United States
Journal Materials Research Bulletin
Volume Number 61


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