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학술지 Effect of Hydrogen Plasma Treatment on Nano-Structured TiO2 Films for the Enhanced Performance of Dye-Sensitized Solar Cell
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저자
김형진, 김주미, 홍병유
발행일
201306
출처
Applied Surface Science, v.274, pp.171-175
ISSN
0169-4332
출판사
Elsevier Science, Elsevier
DOI
https://dx.doi.org/10.1016/j.apsusc.2013.03.006
협약과제
13ZC1200, 그린IT 융.복합 기술개발, 이수인
초록
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.
키워드
Dye-sensitized solar cells (DSSCs), Plasma treatment
KSP 제안 키워드
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