Surface Photovoltage Studies of Moisture Sensitive Characteristic of Copper Tetrasulfonato-Phthalocyanine

作     者：Liu Wang, Xiao Liangzhi, Liang Yuexia, Tian Ke, Wang Dejun and Li Tiejin (Department of Chemistry, Jilin University, Changchun) 

出 版 物：《Chemical Research in Chinese Universities》 (高等学校化学研究（英文版）)

年 卷 期：1991年第7卷第3期

页      面：162-166页

核心收录：

学科分类：07[理学] 0703[理学-化学] 

基　　金：Supported by the National Natural Science Foundation of China 

主　　题：Moisture sensitive material Copper tetrasulfonato-phthalocyanine Surface pho-tovoltage spectroscopy 

摘      要：The surface photovoltaic characteristic of copper tetrasulfonato- phthalocyanine (CuTsPc) in water vapor was studied by surface photovoltage spectroscopy (SPS). It was found that the adsorption of water vapor caused some marvelous changes of the photovoltaic response, that is, the SPS signal diminished rapidly and even reversed; the bands were widened and displayed a bathochromic shift. The dependence of surface photovoltage on the vapor pressure indicates that the reversed signal reaches to a maximum when the vapor pressure is 4.7×102 Pa. The time response velocity, reversibility, selectivity and reproducibili-ty were examined as well. All results obtained show that CuTsPc is of great significance in the manufacture of moisture sensitive devices. In addition, the mechanism of moisture sensitivity is discussed.