The size influence of silica microspheres on photonic band gap of photonic crystals

被引：3
作者：
Ma, Xiying [1 ]
Yan, Zhijun [1 ]
机构：
[1] Shaoxing Coll Arts & Sci, Inst Optoelect Mat, Shaoxing 312000, Zhejiang Prov, Peoples R China
来源：
INTERNATIONAL JOURNAL OF MODERN PHYSICS B | 2007年 / 21卷 / 16期
基金：
中国国家自然科学基金;
关键词：
photonic crystal; three-dimensional; photonic band gap;
D O I：
10.1142/S0217979207037338
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The size influence of silica microspheres on the photonic band gap (PBG) of three-dimensional face-centered-cubic (fcc) photonic crystals (PCs) is studied by means of colloidal photonic crystals, which are self-assembled by the vertical deposition technique. Monodispersed SiO2 microspheres with a diameter of 220 320 nm are synthesized using tetraethylorthosilicate (TEOS) as a precursor material. We find that the PBG of the PCs shifts from 450 run to 680 nm with silica spheres increasing from 220 to 320 run. In addition, the PBG moves to higher photon energy when the samples are annealed in a temperature range of 200-700 degrees C. The large shift results from the decrease in refraction index of silica due to moisture evaporation.
引用
收藏
页码：2761 / 2768
页数：8
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