硅酸盐学报2006，Vol.34Issue(3)：358-361,4.
胶体模板法制备三维锗光子晶体
THREE-DIMENSIONAL GERMANIUM PHOTONIC CRYSTALS PREPARED BY COLLOIDAL TEMPLATE METHOD
张良静 1许静 1龙永福 1谢凯1
作者信息
- 1. 国防科学技术大学材料工程与应用化学系,长沙,410073
- 折叠
摘要
Abstract
Three-dimensional photonic crystals (PCs) were prepared by colloidal template method through a simple controllable chemical filling technique. The synthetic opal made from monodisperse silica colloidal spheres was used as a template, and a white powder of 3-trichlorogermanium propanoic acid (Cl3 GeCH2 CH2 COOH )was synthesized by combination reaction between germanium( Ⅱ )chloride and crylic acid. The Cl3 GeCH2 CH2 COOH solution in ethanol as the germanium precursor was infiltrated into the opal template voids, which was hydrolyzed to form carboxyethyl germanium sesquioxide and reduced by H2 at600 660℃ to form germanium, and then the template was removed chemically by being etched in 2% HF solution. The X-ray diffraction result shows that the final product is the polycrystalline germanium phase. The surface morphology of the final product observed by scanning electron microscopy (SEM) shows that an ordered array composed of air spheres coated with germanium shells was formed. The SEM photographs of the shell surfaces indicate that a smooth and compact shell can be formed when the concentration of the precursor is 0.6 mol/L.关键词
锗光子晶体/胶体晶体/模板/核壳结构Key words
germanium photonic crystals/colloidal crystals/templates/core-shell structure分类
信息技术与安全科学引用本文复制引用
张良静,许静,龙永福,谢凯..胶体模板法制备三维锗光子晶体[J].硅酸盐学报,2006,34(3):358-361,4.
