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纳米多孔二氧化硅薄膜的制备及其光学性质研究 被引量:1

Preparation of nanoporous silica film and research on its optical properties
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摘要 以正硅酸乙酯(TEOS)为先驱体,采用溶胶-凝胶法,结合旋转涂胶和超临界干燥等工艺,在硅片上制备了纳米多孔SiO2薄膜.XRD和AFM表明该SiO2薄膜为无定形态,具有多孔网络结构,表面均匀平整,其SiO2基本粒子和孔隙的直径为30~40nm.利用椭偏光谱仪测量了SiO2薄膜在波长245~1650nm的椭偏光谱,采用Si/cauchy/rough结构模型对该光谱进行了拟合,获得了SiO2薄膜的厚度和光学常数.SiO2薄膜的厚度为500~1100nm;折射率为1.13~1.21;孔隙率为56%~70%;介电常数为1.9~2.3.
出处 《高技术通讯》 CAS CSCD 北大核心 2005年第6期55-57,共3页 Chinese High Technology Letters
基金 武器装备预研基金
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参考文献8

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