化学学报 ›› 2001, Vol. 59 ›› Issue (2): 224-229. 上一篇    下一篇

研究论文

溶胶-凝胶法制备镶嵌在SiO2玻璃中的InAs纳米晶

杨合情;张邦劳;刘守信;房喻;张良莹;姚熹   

  1. 复旦大学物理系应用表面物理国家重点实验室;陕西师范大学化学系.西安 (710062);西安交通大学电子材料与器件研究所
  • 发布日期:2001-02-15

Synthesis of InAs nanocrystals embedded in SiO2 glasses by a sol-gel process

Yang Heqing;Zhang Banglao;Liu Shouxin;Fang Yu;Zhang Liangying;Yao Xi   

  1. Shanxi Normal Univ, Dept Chem.Xian(710062)
  • Published:2001-02-15

以As2O3,InCl3·4H2O和正硅酸乙酯为原料,通过水解、缩聚制备了xIn2O3-xAs2O3-100SiO2(x=0.5~7.5)凝胶,在氧气中加热到450℃对凝胶热处理使其转化成凝胶玻璃,再在200~500℃与氢气反应,结果在SiO2凝胶玻璃中形成了立方相InAs,利用XRD测试了InAs纳米颗粒的大小、发现随着反应温度的升高及掺杂量的增加,InAs纳米颗粒粒径从6增大到29nm,电子衍射表明凝胶玻璃中的InAs纳米颗粒为多晶结构。

关键词: 溶胶-凝胶法, 镶嵌结构, 二氧化硅, 玻璃, 砷化铟, 半导体, 纳米相材料, 多晶

InAs nanocrystals embedded in SiO2 gel - glasses were prepared by a sol-gel method. The gels synthesized through the hydrolysis of a complex solution of Si(OC2H5)4, As2O3 and InCl3·4H2O were heated at 450℃ in O2 atmosphere, and then heated from 200 to 500℃ in H2 atmosphere to form fine cubic InAs crvstals. The size of InAs nanocrystals, determined from the line broadening of X - ray diffraction pattern, increases from 6 to 29 in diameter with heat - treatment temperature and molar ratio of InAs/SiO2 increasing. The InAs nanocrystal was found to be a polycrystal in the gel-glasses by electron diffraction pattern.

Key words: SOL-GEL PROCESS, MOSAIC TEXTURE, SILICON DIOXIDE, GLASS, INDIUM ARSENIDE, SEMICONDUCTOR, NANOPHASE MATERIALS, POLYCRYSTAL

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