Citation: LI Jie, KONG Fan-Tai, WU Guo-Hua, ZHANG Chang-Neng, DAI Song-Yuan. TiO₂ Thin-Film Electrode Modified by Co-Adsorbents[J]. Acta Physico-Chimica Sinica, ;2011, 27(04): 881-886. doi: 10.3866/PKU.WHXB20110413 shu

TiO₂ Thin-Film Electrode Modified by Co-Adsorbents

1.
Key Laboratory of Novel Thin Film Solar Cells, Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, P. R. China

Received Date: 3 December 2010
Available Online: 3 March 2011
Fund Project: 国家重点基础研究发展规划(2011CBA00700) (2011CBA00700) 国家自然科学基金(21003130) (21003130)安徽省自然科学基金(090414174)资助项目 (090414174)

A co-adsorbents modified nanocrystalline TiO₂ thin-film electrode was studied for application in dye-sensitized solar cells. The effects of di(3,3-dimethylbutyl) phosphoric acid and chenodeoxycholic acid modification on the flat band potential and the passivation of the TiO₂ thin-film electrode were investigated by determining the flat-band potential and undertaking electrochemical impedance spectroscopy (EIS). The results suggest that di(3,3-dimethylbutyl) phosphoric acid is more effective in passivating the TiO₂ film surface and in shifting the flat-band potential negatively. For the dye-sensitized solar cells, EIS measurements indicate that the use of di(3,3-dimethylbutyl) phosphoric acid as a co-adsorbent may be more effective in increasing the electronic lifetime and the open-circuit voltage of the device than chenodeoxycholic acid.
- Dye-sensitized solar cell,
- Coadsorbent,
- Dark current,
- Flat-band potential,
- Electrochemical impedance spectroscopy
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沈阳化工大学材料科学与工程学院沈阳 110142

TiO2 Thin-Film Electrode Modified by Co-Adsorbents

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TiO₂ Thin-Film Electrode Modified by Co-Adsorbents