Comparison of the photovoltaic efficiency on DSSC for nanometer sized TiO2 using a conventional sol-gel and solvothermal methods

Title
Comparison of the photovoltaic efficiency on DSSC for nanometer sized TiO2 using a conventional sol-gel and solvothermal methods
Author(s)
강미숙이예지[이예지]채진호[채진호]
Keywords
CELLS; ANATASE
Issue Date
201004
Publisher
ELSEVIER SCIENCE INC
Citation
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY, v.16, no.4, pp.609 - 614
Abstract
When the two types of TiO2 coatings prepared by sol-gel and solvothermal methods were applied to dye-sensitized solar cell (DSSC) in this study, the energy conversion efficiency of the solvothermal-modified TiO2 was considerably higher than that on the sol-gel modified TiO2; approximately 8.51 (solvothermal) and 5.93% (sol-gel) with the N719 dye under 100 mW/cm(2) of simulated sunlight, respectively. These results are in agreement with an electrostatic force microscopy (EFM) study showing that the electrons were transferred rapidly to the surface of the solvothermal-modified TiO2 film, compared with that on a sol-gel modified TiO2 film. Furthermore, FT-IR analysis of the films after N719 dye adsorption showed that the solvothermal-modified TiO2 had a strong band at 500 cm(-1), which was assigned to metal-O, due to a new Ti-O bond between the O of COO- and a Ti atom. This peak was considerably weaker in the sol-gel modified TiO2. (C) 2010 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
URI
http://hdl.handle.net/YU.REPOSITORY/22594http://dx.doi.org/10.1016/j.jiec.2010.03.008
ISSN
1226-086X
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이과대학 > 화학생화학부 > Articles
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