Journal
ELECTROCHEMISTRY COMMUNICATIONS
Volume 11, Issue 1, Pages 75-79Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.elecom.2008.10.020
Keywords
Plasma treatment; Dye-sensitized solar cell; Surface structure
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- second-stage Brain Korea 21
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Radio frequency (RF) plasma treatment of nano-structured TiO2 Was carried out to enhance the efficiency of dye-sensitized solar cell. Relative change in surface chemistry and hydrophilic characteristics was investigated by X-ray photoelectron spectroscopy (XPS) and contact angle measurements. Increase in surface hydrophilic and carboxyl functionality had enhanced the dye molecule adsorption. Plasma treatment has also increased proportion of Ti3+ surface site which supported transport of electron and hole between dye molecules and photoelectrode. Plasma treated TiO2 at optimum condition had increased efficiency by 40% relative to untreated TiO2. (C) 2008 Elsevier B.V. All rights reserved.
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