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采用溶胶－凝胶方法在普通的载玻片上制备了ＣｄＳ微晶掺杂的ＴｉＯ２／ＳｉＯ２复合薄膜。用正硅酸乙酯、钛酸丁酯、醋酸镉作原料，比较了两种硫化剂：硫尿和硫代乙酰氨的硫化作用。Ｘ射线衍射谱和拉曼光谱揭示了ＣｄＳ微晶镶嵌在ＴｉＯ２／ＳｉＯ２薄膜的玻璃网络中。不同热处理温度、不同热处理时间的吸收光谱表明薄膜中存在着量子尺寸效应。采用Ｚ扫描技术测量了薄膜的非线性吸收及非线性折射率ｎ２＝－４．６７×１０－７ｅｓｕ。
CdS microcrystalline doped TiO2 / SiO2 composite films were prepared on common glass slides by sol-gel method. Using tetraethylorthosilicate, butyl titanate and cadmium acetate as raw materials, two vulcanizing agents were compared: the vulcanization of thiourea and thioacetamide. X-ray diffraction and Raman spectroscopy reveal that CdS crystallites are embedded in the glass network of TiO2 / SiO2 films. The absorption spectra at different heat treatment temperatures and different heat treatment times show that there is a quantum size effect in the film. Z-scan technique was used to measure the nonlinear absorption and nonlinear refractive index of the film n2 = -4.67 × 10-7esu.