Electron Transport Research in Dye–Sensitized Solar Cells Based on 4–Tert–Butylpyridine

Chin J Mater Res

2011, Vol. 25

Issue (6): 613-617 DOI:

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Electron Transport Research in Dye–Sensitized Solar Cells Based on 4–Tert–Butylpyridine

XI Xiaowang, HU Linhua, LIU Weiqing, DAI Songyuan

1.Key Laboratory of Novel Thin Film Solar Cells, Institute of Plasma Physics, Chinese Academy of sciences, Hefei 230031
2.The college of Mechanical and Electrical Technology, Wuxi Institute of technology, Wuxi 214121

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XI Xiaowang HU Linhua LIU Weiqing DAI Songyuan. Electron Transport Research in Dye–Sensitized Solar Cells Based on 4–Tert–Butylpyridine. Chin J Mater Res, 2011, 25(6): 613-617.

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Abstract The electron transport and back-reaction in DSCs with and without TBP were investigated by intensity-modulated photocurrent spectroscopy (IMPS) and intensity-modulated photovoltage spectroscopy (IMVS). The results indicate that the increase of the open-circuit voltage was attributed to the negative shift of the TiO2 conduction band potential by the surface adsorption of TBP. The negative shift of the TiO2 conduction band potential reduced the electron injection force and decreased the photoaccumulated charge concentration in the TiO2 film, which increased the electron transit time (τd) and decreased the short-circuit current. Overall, the addition of TBP into the electrolyte increased the efficiency of DSCs by 37%.

Key words: inorganic non–metallic materials electron transport sol–gel TBP dye–sensitized solar cell

Received: 15 April 2011

ZTFLH:

TK519

Fund:

Support by National Basic Research Program of China No. 2011CBA00700, National High Technology Research and Development Program of China No. 2009AA050603 & 2011AA050527, and the Main Direction Program of Knowledge Innovation of Chinese Academy of Sciences No. KGCX2–YW–326.

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https://www.cjmr.org/EN/ OR https://www.cjmr.org/EN/Y2011/V25/I6/613

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