ISSN:
1662-9779
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Physics
Notes:
Dye-sensitized solar cell (DSSC) is of great interest as one of renewableenergy sources. So far, many investigations related to TiO2 electrode, dye, electrolyte,Pt counter electrode, etc. were carried out. Here, we focus on Pt counter electrode forproviding an enhanced catalytic property and physical stability. Pt has high-conductivityand superior catalytic properties. However, in case of Pt as counter electrode for DSSC,there exists partial problem due to poor adhesion between Pt and FTO glass. In thiswork, we tried to enhance the properties of Pt catalyst by two methods; first, theinsertion of buffer layer under Pt thin film; second, the heat treatment of Pt films. Wereport the effect of buffer layer using Cr and Ti and the effect of heat treatment on Ptelectrode under 400oC. Electrochemical characteristics of Pt electrodes were measuredusing electrochemical impedance spectroscopy and cyclic-voltammetry. A degree ofelectrode reaction, current density, electrode potential and interface resistance, etc werediscussed with measured electrochemical data. In comparison with sputtered Pt counterelectrode with and without buffer layers, heat-treated Pt counter electrode showed goodperformance in terms of the current density and interface resistance properties
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/23/transtech_doi~10.4028%252Fwww.scientific.net%252FSSP.119.283.pdf
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