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Influence of Nanostructured TiO2 Electrode Fabricated with Acid-treated Paste on the Photovoltaic Efficiency of Dye-Sensitized Solar Cells  

Lee, Jae-Wook (Department of Environmental and Chemical Engineering, Seonam University)
Hwang, Kyung-Jun (Department of Chemical and Biochemical Engineering, Chosun University)
Roh, Sung-Hee (Department of Environmental and Chemical Engineering, Seonam University)
Kim, Sun-Il (Department of Environmental and Chemical Engineering, Seonam University)
Publication Information
Applied Chemistry for Engineering / v.18, no.4, 2007 , pp. 356-360 More about this Journal
Abstract
Recently, dye sensitized solar cells (DSSCs) composed of nanoporous $TiO_2$, light-sensitive dyes, electrolytes, and counter electrode have been received much attention. Nanostructured particles with higher surface area for the higher adsorption of Ru (II) dye are required to increase the quantity of light absorption. Also, it has been reported that the key factor to achieve high energy conversion efficiency in the photoelectrode of DSSC is the heat treatment of $TiO_2$ paste with acid addition. In this work, we investigated the influence of acid treatment of $TiO_2$ solar cell on the photovoltaic performance of DSSC. The working electrodes fabricated in this work were characterized by X-ray photoelectron spectroscopy (XPS), extended X-ray absorption fine structure (EXAFS), field emission scanning electron microscope (FE-SEM), and atomic force microscope (AFM). In addition, the influence of nanostructured photoelectrode fabricated with the acid-treated paste on the energy conversion efficiency was investigated on the basis of photocurrent-potential curves. It was found that the influence of acid-treated paste on the photovoltaic efficiency was significant.
Keywords
dye-sensitized solar cells; $TiO_2$; acid treatment; photoelectrode; I-V curves;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
Times Cited By SCOPUS : 1
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