Effectof UV Illumination Treatment on Surface Photovoltaic Properties of TiO2 Films

Abstract

Abstract: Ti O₂ films and N- doped Ti O₂ films were prepared by magnetron sputtering methodology.The films were illuminated at365 nm for5— 20 min followed by the measurementof contactangles and surface photovoltage spectroscopy.The results show thatfor n- type Ti O₂ film,UV illumination treatment can in- crease the photovoltage,while for p- type Ti O₂ film,such treatment can decreases the photovoltage.The photovoltaic changing was explained by Ti— OH group increasing due to photo- induced hydrophility.For n- type Ti O₂ film,Ti— OH groups can increase the photo- induced charge separation and thus iucrease the photovoltage;for p- type Ti O₂ film,Ti—OH groups decrease the photo- induced charge separation and thus decrease the photovoltage.

Key words: TiO₂ film, N-doped TiO₂ film, Hydrophilicity, Photovoltage

CLC Number:

O644

TrendMD:

FENG Wen- Hui, SONG Yan- Lin, WANG De- Jun, ZHAI Jin, JIANG Lei. Effectof UV Illumination Treatment on Surface Photovoltaic Properties of TiO₂ Films[J]. Chem. J. Chinese Universities, 2004, 25(6): 1142.

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Effectof UV Illumination Treatment on Surface Photovoltaic Properties of TiO₂ Films

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