二氧化硅胶体晶体的制备及其光子带隙特性

无机材料学报

二氧化硅胶体晶体的制备及其光子带隙特性

快素兰; 章俞之; 胡行方

中国科学院上海硅酸盐所上海 200050

收稿日期:2001-01-11 修回日期:2001-02-19 出版日期:2002-01-20 网络出版日期:2002-01-20

Fabrication and Photonic Band Gap Property of Silica Colloidal Crystals

KUAI Su-Lan; ZHANG Yu-Zhi; HU Xing-Fang

Shanghai Institute of Ceramics; Chinese Academy of Sciences; Shanghai 200050; China

Received:2001-01-11 Revised:2001-02-19 Published:2002-01-20 Online:2002-01-20

摘要/Abstract

摘要： 利用胶体颗粒悬浊液的自组织生长技术制备了两种二氧化硅胶体晶体．透射光谱表明：所制备的胶体晶体的光子带隙位于近红外波段，带隙的位置随胶体晶体中胶粒的尺寸而变化；且放置时间延长，带隙将发生蓝移．

关键词: 二氧化硅胶体球, 胶体晶体, 光子带隙

Abstract: Two kinds of silica colloidal crystals were fabricated by the self-assembly of mono- disperse silica particles. Optical microscope images show that the samples axe polycrystalline. Transmission measurements show the existence of photonic band gaps, and the center of which is strongly determined by the size of the colloidal spheres. With aging-time increasing the photonic band gap shifts considerably towards shorter wavelength.

Key words: silica colloidal spheres, colloidal crystals, photonic band-gap

中图分类号:

O734

快素兰,章俞之,胡行方. 二氧化硅胶体晶体的制备及其光子带隙特性[J]. 无机材料学报.

KUAI Su-Lan,ZHANG Yu-Zhi,HU Xing-Fang. Fabrication and Photonic Band Gap Property of Silica Colloidal Crystals[J]. Journal of Inorganic Materials.