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Journal Article Effect of Hydrogen Plasma Treatment on Nano-Structured TiO2 Films for the Enhanced Performance of Dye-Sensitized Solar Cell
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Authors
Hyung Jin Kim, Jumi Kim, Byungyou Hong
Issue Date
2013-06
Citation
Applied Surface Science, v.274, pp.171-175
ISSN
0169-4332
Publisher
Elsevier Science, Elsevier
Language
English
Type
Journal Article
DOI
https://dx.doi.org/10.1016/j.apsusc.2013.03.006
Project Code
13ZC1200, Green IT convergence Technologies Development, Lee Soo In
Abstract
We report an efficient method to improve the efficiency and stability of DSSC with nano-structured TiO 2 . A low temperature RF plasma-enhanced chemical vapor deposition (PECVD) system was utilized for hydrogen plasma treatment on nano-structured TiO 2 film. We confirmed that the efficiency of DSSCs was significantly dependent on the plasma power. This increased the hydrophilic property, the excess electrons and dye adsorption on its surface. The relative change in surface chemistry and hydrophilic characteristics with plasma treatment was investigated using various analysis methods. In our study, we showed that DSSC with plasma-treated TiO 2 had a power conversion efficiency of 6.94%, which is 21% higher than that without plasma treatment. It was found that the plasma treatment caused both increased dye adsorption and significant longer electron lifetime. © 2013 Elsevier B.V. All rights reserved.
KSP Keywords
Analysis method, Conversion efficiency(C.E.), Dye-sensitized solar cells(DSCs), Effect of hydrogen, Electron lifetime, Hydrophilic properties, Low temperature(LT), Nano-structured TiO 2, Plasma power, Plasma-treated, Relative change