CAJ | 학술논문

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0.6 mol/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.
채용효체모판법병통과간단가공적화학전충공예제비료삼유타광자정체:이단분산이양화규소구적단백석결구위모판,유록화아타여병희산화합제비득도3-삼록타병산(Cl3GeCH2CH2COOH)백색분말,이삼록타병산적을순용액작위타원선구체,저온수해득도β-최을기타배반양화물,재600～660℃경H2환원후형성타,유2%HF화학침식소제모판,대종산물진행X사선연사분석.결과표명:산물위다정타.통과소묘전자현미경대종산물적형모진행관찰적결과표명:포과유공기적타각구유서진렬이경형성.장선구체농도위0.6 mol/L적용액전입모판공극후,각층표면가이획득교위광활치밀적타각.
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.