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http://dx.doi.org/10.5229/JKES.2007.10.4.257

CdSe Quantum Dots Sensitized TiO2 Electrodes for Photovoltaic Cells  

Yum, Jun-Ho (Laboratory for Photonics and Interfaces, Institute of Chemical Sciences and Engineering, School of basic Sciences, Swiss Federal Institute of Technology)
Choi, Sang-Hyun (School of Chemical Engineering and Research Center for Energy Conversion and Storage, Seoul National University)
Kim, Seok-Soon (Department of Materials Science and Engineering, Gwangju Institute of Science and Technology)
Kim, Dong-Yu (Department of Materials Science and Engineering, Gwangju Institute of Science and Technology)
Sung, Yung-Eun (School of Chemical Engineering and Research Center for Energy Conversion and Storage, Seoul National University)
Publication Information
Journal of the Korean Electrochemical Society / v.10, no.4, 2007 , pp. 257-261 More about this Journal
Abstract
The electronic properties of quantum dots can be tuned by changing the size of particles without any change in their chemical composition. CdSe quantum dots, the sizes of which were controlled by changing the concentrations of Cd and Se precursors, were adsorbed on $TiO_2$ photoelectrodes and used as sensitizers for photovoltaic cells. For applications of CdSe quantum dot as sensitizers, $CdSe/TiO_2$ films on conducting glass were employed in a sandwich-type cell that incorporated a platinum-coated conductive glass and an electrolyte consisting of an $I^-/I_3^-$ redox. The fill factor (FF) and efficiency for energy conversion ($\c{c}$) of the photovoltaic cell was 62 % and 0.32 %, respectively.
Keywords
Quantum dot; Quantum dot-sensitized solar cell; CdSe; Nanostructured $TiO_2$;
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