Photoinduced Enhancement of Dielectric Constant in Rutile TiO2
Journal Title: 河南科技大学学报（自然科学版） - Year 2017, Vol 38, Issue 5
Abstract
The effects of ultra violet ( UV) light irradiation on the dielectric properties of rutile TiO2 and anatase TiO2 were investigated. In the dark and under UV light irradiation, the dielectric constants of rutile TiO2 and anatase TiO2 were measured at the frequencies of 40 ~ 106 Hz by impedance spectroscopy. The measurement results show that in the frequency range of 50 ~ 400 Hz, the dielectric constant of rutile TiO2 is enhanced by18% while the dielectric loss is reduced by 7% by UV light irradiation. The dielectric constant of anatase TiO2 is reduced by 10% at the same conditions of irradiation and frequency.
Authors and Affiliations
Zhixiao WANG, Fengzi ZHOU, Guoling LI, Guozhong ZANG, Liben LI
Keywords
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