Studies on the Surface of TiO2(001) Single Crystal by Surface Photovoltage Spectroscopy

Chem. J. Chinese Universities ›› 1999, Vol. 20 ›› Issue (9): 1458.

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Studies on the Surface of TiO₂(001) Single Crystal by Surface Photovoltage Spectroscopy

HUI Zheng, XU Jin-Jie, XIE Teng-Feng, WANG De-Jun, LI Tie-Jin, SUN Chia-Chung

Department of Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun 130023, China

Received:1999-05-12 Online:1999-09-24 Published:1999-09-24

Abstract

Abstract: Tio₂(001) surface of rutile TiO₂single crystals was studied by surface photovoltage spectrum (SPS) and electrical field-induced surface photovoltage spectrum (EFISPS)techni(lue.The two SPS responses peak at 360 nm and 410 nm were identified as direct transition and indirect transition of TiO₂(001) plane, respectively.And it was found that the indirect transition of TiO₂was very sensitive to the external electrical field.These results indicate that SPSand EFlSPSare effective means to study the opto-electrical characteristics ofsemico nd uctors.

Key words: TiO₂single crystals, Surface photovoltage spectroscopy, Electrical fleld-induced surface photovoltage spectroscopy

CLC Number:

O643.32

TrendMD:

HUI Zheng, XU Jin-Jie, XIE Teng-Feng, WANG De-Jun, LI Tie-Jin, SUN Chia-Chung. Studies on the Surface of TiO₂(001) Single Crystal by Surface Photovoltage Spectroscopy[J]. Chem. J. Chinese Universities, 1999, 20(9): 1458.

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Studies on the Surface of TiO₂(001) Single Crystal by Surface Photovoltage Spectroscopy

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