论文部分内容阅读
采用胶体模板法并通过简单可控的化学填充工艺制备了三维锗光子晶体以单分散二氧化硅小球的蛋白石结构为模板,由氯化亚锗与丙烯酸化合制备得到3-三氯锗丙酸(Cl3GeCH2CH2COOH)白色粉末,以三氯锗丙酸的乙醇溶液作为锗源先驱体,低温水解得到β羧乙基锗倍半氧化物,在600~660℃经H2还原后形成锗,由2%HF化学浸蚀消除模板,对终产物进行X射线衍射分析。结果表明产物为多晶锗。通过扫描电子显微镜对终产物的形貌进行观察的结果表明包裹有空气的锗壳球有序阵列已经形成。将先驱体浓度为0.6mol/L的溶液填入模板空隙后,壳层表面可以获得较为光滑致密的锗壳。
The colloidal template method and the controlled chemical filling process were used to prepare three-dimensional germanium photonic crystal monodisperse silica spheres opal structure as a template, germanium chloride and acrylic acid prepared from 3-trichlorogermanium propionate (Cl3GeCH2CH2COOH) as a white powder, using trichlorogermanium propionate in ethanol as a germanium source precursor, hydrolyzing to obtain β-carboxyethylgermanium sesquioxide and reducing germanium at 600~660 ° C to form germanium, and 2% HF Chemical etching eliminates the template and X-ray diffraction analysis of the final product. The results show that the product is polycrystalline germanium. The result of observation of the morphology of the final product by a scanning electron microscope shows that an ordered array of air-filled germanium shells has been formed. After the precursor concentration of 0.6 mol / L was filled into the template voids, a more smooth and dense germanium shell was obtained on the shell surface.