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J. Korean Ceram. Soc. > Volume 22(4); 1985 > Article
Journal of the Korean Ceramic Society 1985;22(4): 9.
n-형 $TiO_2$ 세라믹 전극의 광 활동도
윤기현, 김종선
연세대학교 요업공학과
Photoactivity of n-type $TiO_2$ Ceramic Electrodes
The quantum efficiency vs. wavelength curves with different reducing treatments for the 99.99% and 98.5% $TiO_2$ ceramic electrodes have been analyzed according to the Schottky barrier model of the semiconductor-elect-rolyte interface, The model allows the main physical parameters governing the photoelectrochemical properties of the semicon-ductor to be determined. According to these data the impurity ions as three valence state ($Fe^{3+})$ in the $TiO_2$ raw materials have great influence on the photoresponse and the $TiO_2$ ceramic electrodes show much lower quantum efficiency than the $TiO_2$ single crystal due to existence of the recombination centers.
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