【作者】 曹永海；

【导师】 刘琨；

【作者基本信息】 大连理工大学 ， 光学， 2012， 硕士

【摘要】 拉曼光谱技术是一种准确、快速、无损的分子结构信息分析手段。近年来,随着科技的不断发展,拉曼光谱技术被广泛地应用在众多领域中。本论文以半导体材料在拉曼光谱及表面增强拉曼光谱技术中的应用为主要内容,完成了以下两方面的工作：首先,应用一步电化学沉积工艺在ITO玻璃上制备了铜铟硒(CuInSe2)薄膜,并通过拉曼光谱对得到的薄膜进行了全面系统的分析。从光谱中的拉曼特征峰可以判断,生成的薄膜具有黄铜矿晶体结构；同时,对于由沉积电位改变和退火处理导致的其他二元相的生成及晶化率的变化等情况,都可以通过拉曼光谱清晰准确地观察到,并且变化的程度也灵敏地反映在光谱中。其次,应用水溶液法在(100)取向的单晶硅片上生长了由规则六边形氧化锌(ZnO)纳米片叠加形成的薄膜,之后在其表面修饰银作为新型的表面增强拉曼散射衬底。修饰银分为溅射银膜和光还原银粒子两种手段。以荧光大分子罗丹明6G(R6G)作为探针分子,通过对不同银膜厚度和银粒子衬底的表面形貌及其拉曼光谱的分析,证明了这两种衬底都具有高效的表面增强拉曼散射活性,但增强效果有着差别,而不同的银膜厚度同样对衬底的增强效果有着影响。同时,通过拉曼1mapping扫描表明衬底表面的拉曼“热点”分布均匀。更多还原

【Abstract】 Raman spectroscopy is an analysis method which can get the information of molecular structure accurately and rapidly. With the development of science and technology, Raman spectroscopy is widely used in many fields these years. The main content of this paper is the application of semiconductor in Raman spectra and Surface Enhanced Raman Scattering. It has completed two aspect job.Firstly, Copper Indium Selenium (CuInSe2) thin film was deposited on ITO glass by electrochemical method. And a comprehensive research was taken dependent on the Raman spectra of the CIS film. The Raman characteristic peak can prove that the CIS film has chalcopyrite crystal structure. At the same time, the growth of other binary phase and the variation of crystallinity caused by the change of sedimentary potential and annealing process can be observed clearly and accurately from the Raman spectra.Secondly, a new kind of Surface Enhanced Raman Scattering (SERS) substrate was fabricated by covering silver on Zinc oxide (ZnO) film, which was made up of regular hexagon nano sheets on monocrystalline silicon of (100) orientation by aqueous solution. Covering silver on ZnO film can be divided into sputtering silver film and photoreduction of silver particles. This experiment used fluorescent molecules rhodamine6G (R6G) as the probes molecules. It is proved that the two kinds of substrate both have efficient SERS activity according to the analysis, which based on the Raman spectra and surface morphology of different silver thickness substrate and silver particles substrate. While the enhanced effect was not same, and different thickness of silver film also has different effect. Besides, the "hot spots" distribution on the substrate surface was proved to have high uniformity by Raman mapping scanning.更多还原