| 一维多孔TiO_2/SiO_2光子晶体能带结构模拟计算 |
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| 引用本文： | 李建锋,宋玉哲,王向谦,韩根亮. 一维多孔TiO_2/SiO_2光子晶体能带结构模拟计算[J]. 甘肃科学学报, 2017, 29(4). DOI: 10.16468/j.cnki.issn1004-0366.2017.04.016 |
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| 作者姓名： | 李建锋 宋玉哲 王向谦 韩根亮 |
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| 作者单位： | 甘肃省科学院 传感技术研究所,甘肃 兰州 730000;甘肃省传感器与传感技术重点实验室,甘肃 兰州 730000 |
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| 基金项目： | 甘肃省科学院青年科技创新基金项目，甘肃省科技支撑计划，甘肃省基础研究创新群体，甘肃省科学院应用研究与开发计划 |
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| 摘 要： | 为展宽光子带隙,提出多孔薄膜层状结构的一维光子晶体模型。采用有效介质理论计算多孔薄膜有效介电常数,使用平面波展开法,模拟计算了一维多孔TiO_2/SiO_2光子晶体的能带结构。结果表明:电介质层孔隙率变化、厚度变化时,带隙宽度和中心频率都能被有效地调制,可实现紫外、可见光波段宽带隙的光学介质组合。这为可见光区光电子器件的制备提供了新的思路。
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| 关 键 词： | 多孔TiO2 光子晶体 平面波展开法 孔隙率 |
Numerical Computation of One-dimensional Porous TiO2/SiO2 Photonic Crystal Band Structure |
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| Li Jianfeng,Song Yuzhe,Wang Xiangqian,Han Genliang. Numerical Computation of One-dimensional Porous TiO2/SiO2 Photonic Crystal Band Structure[J]. Journal of Gansu Sciences, 2017, 29(4). DOI: 10.16468/j.cnki.issn1004-0366.2017.04.016 |
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| Authors: | Li Jianfeng Song Yuzhe Wang Xiangqian Han Genliang |
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| Abstract: | One-dimensional photonic crystal model of porous,film and stratified structure is proposed in order to broaden photonic band gap.Effective dielectric constant of porous films is calculated by effective medium theory.One-dimensional and porous TiO2/SiO2 photonic crystal energy band structure is simulated to calculate with plane wave expansion method.The result shows that band gap width and center frequency can be effectively regulated with changing of dielectric layer porosity,thickness,so optics medium of ultraviolet and visible light band broad-band gap is combined.This provides new idea and theory basis for preparation of optoelectronic device in visible region. |
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| Keywords: | Porous TiO2 Photonic crystal Plane wave expansion method Porosity |
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