Fabrication and Study on the Annealing Effects of 3D Photonic Crystals in Visible Light Range
In this paper, we present rapid layer々layer self-assemble three dimensional photonic crystals on quartz substrates using TEOS as material based on the improved Stober method and the vertical deposition technique. The colloidal solution contains uniform mono-dispersed SiO2 sphere about 235 nm in diameter observed by TEM. The surface and the across profile of the photonic crystals are investigated by SEM，it shows that the photonic crystals is closed packing as face central cubic in the way of (111) facet The transmission /reflectance spectrum of the sample shows a very deep transmission valley/reflectance peak located at 534 nm, indicating that the photonic crystals has a large photonic band gap in the visible wavelength range. We have further studied the thermal effects of photonic band gap (PBG), it is found that the PBG shifts towards high photonic energy direction with the annealing changes from 200-1000 ℃.
photonic crystals vertical deposition technique silica sphere photonic band gap
马锡英 闫志君 陈新安
绍兴文理学院物电系光电材料研究所,浙江省绍兴市 312000
国际会议
成都
英文
2007-11-19（万方平台首次上网日期，不代表论文的发表时间）