【作者】 王玉金； 梁二军； 侯志坚； 刘凡镇；

【Author】 Yujin Wang,Erjun Liang,Zhijian Hou Center of Analysis and Testing,Zhengzhou University Fan-chen Liu,Department of Modern Chemistry, University of Science and Technology of China

【机构】 郑州大学分析测试中心； 中国科技大学近代化学系；

【摘要】 <正>一、引言表面增强Raman散射(SERS)效应的发现,为人们提供了有关表面吸附分子的广泛信息。研究半导体粗糙表面吸附分子的SERS效应,有利于解决有关SERS机理的争论,开拓SERS技术在更广泛领域的应用。已经发现具有SERS活性的半导体体系有金属氧化物,卤化物等多种[1],Ueba等人对半导体表面发生SERS效应的问题做了理论上的研究,结果表更多还原

【Abstract】 Uniform CdS Colloid of size about 100 nm has been prepared and SERS effects of more than ten kinds of molecules adsorbed on the colloid surface have been investigated.With resonant excitation,SERS effects of adsorbed Dioxane,Racemic Acid, Sodium Citrate molecules were observed.Results show that,for SERS effect of molecule adsorbed on surface of semiconductor, surface induced excitation is very important and chargetranslation of chemical adsorption is its principal source.更多还原