不同膜厚对SiO_2光子晶体形貌及光学性能的影响
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摘要
利用改良的St?ber法制成了粒径均一的SiO_2胶体颗粒,胶体微球颗粒平均粒径为200 nm。保持SiO_2悬浮液体积分数相同,对双基片自组装垂直沉积进行改造,改变夹层厚度,沉积得到厚度不同的SiO_2光子晶体薄膜。利用扫描电子显微镜观察了膜厚不同的SiO_2光子晶体薄膜样品的表面以及断面微观形貌,测试了样品的光反射性能,此外还讨论了光子晶体薄膜厚度对样品表面的形貌以及样品光反射性能带来的影响。
The uniform SiO_2 particles with a diameter of 200 nm were synthesized by modified St?ber method. In the same concentration of SiO_2 suspension,SiO_2 photonic crystals with different thickness were successfully fabricated by modifying twosubstrate vertical deposition method. The surface and cross-section morphologies of SiO_2 photonic crystals with different thickness were characterized by SEM. Reflection spectrum of the samples were measured by UV-Vis spectrophotometer.Influence of film thickness on the morphology and optical properties of SiO_2 photonic crystals were analyzed.
The uniform SiO_2 particles with a diameter of 200 nm were synthesized by modified St?ber method. In the same concentration of SiO_2 suspension,SiO_2 photonic crystals with different thickness were successfully fabricated by modifying twosubstrate vertical deposition method. The surface and cross-section morphologies of SiO_2 photonic crystals with different thickness were characterized by SEM. Reflection spectrum of the samples were measured by UV-Vis spectrophotometer.Influence of film thickness on the morphology and optical properties of SiO_2 photonic crystals were analyzed.
引文
[1] Yablonovitch E. Inhibited spontaneous emission in solid-state physics and electronics[J]. Phys. Rev. Lett.,1987,58:2059-2062.
[2] John S. Strong localization of photons in certain disordered dielectric superlattics[J]. Phys. Rev. Lett.,1987,58:2486-2489.
[3] Fink Y,Winn J N,Fan S. A dielectric omnidirectional reflector[J]. Science,1998,282:1679-1682.
[4] Chutinan A,Noda S. Waveguide and waveguide bends in two-dimensional photonic crystal slabs[J]. Phys. Rev. B,2000,62(7):4488-4492.
[5] Ma Z T,Ogusu K. Channel drop filters using photonic crystal Fabry-Perot resonators[J]. Opt. Commun.,2011,284:1192-1196.
[6]刘彤,赵京,孔玉娥,等.光子晶体光纤的研究与进展[J].硅酸盐通报,2004,23(2):36-39.
[7] Im S H,Kim M H,Park O O. Thickness control of colloidal crystals with a substrate dipped at a tilted angle intl a colloidal suspension[J].Chem. Mater,2003,15(30):1797-1802.
[8] Jiang P,Bertone J F,Hwang K S,et al. Single-crystal colloidal multilayers of controlled thickness[J]. Chem. Mater.,1999,11:2132-2140.
[9] Mc Lachlan M A,Johnson N P,De La Rue R M,et al. Domain size and thickness control of thin film photonic crystals[J]. J. Mater. Chem,2005,15:369-371.
[10] Preda N,Enculescu M,Matei E,et al. The influence of synthesis parameters on size and morphology of poly(styrene-hydroxyethyl methacrylate)colloids[J]. Dig J. Nanomater Bios.,2010,5(4):1055-1065.
[11] Kim M H,Im S H,Park O O. Rapid fabrication of Two-and Three-dimensional colloidal crystal films via confined convective assembly[J]. Adv.Funct Mater,2005,15:1329-1335.
[12] Chen X,Sun Z Q,Zhang K,et al. Two-substrate vertical deposition for stable colloidal chips[J]. Chin. Sci. Bull.,2005,50(8):765-769.
[13] Piret F,Su B L. Effects of pH and ionic strength on the self-assembly of silica colloids to opaline photonic structures[J]. Chem. Phys. Lett.,2008,457:376-380.
[14] Rengarajan R,Mittleman D. Effect of disorder on the optical properties of colloidal crystals[J]. Phys. Rev. E,2005,71:016615-016625.
[2] John S. Strong localization of photons in certain disordered dielectric superlattics[J]. Phys. Rev. Lett.,1987,58:2486-2489.
[3] Fink Y,Winn J N,Fan S. A dielectric omnidirectional reflector[J]. Science,1998,282:1679-1682.
[4] Chutinan A,Noda S. Waveguide and waveguide bends in two-dimensional photonic crystal slabs[J]. Phys. Rev. B,2000,62(7):4488-4492.
[5] Ma Z T,Ogusu K. Channel drop filters using photonic crystal Fabry-Perot resonators[J]. Opt. Commun.,2011,284:1192-1196.
[6]刘彤,赵京,孔玉娥,等.光子晶体光纤的研究与进展[J].硅酸盐通报,2004,23(2):36-39.
[7] Im S H,Kim M H,Park O O. Thickness control of colloidal crystals with a substrate dipped at a tilted angle intl a colloidal suspension[J].Chem. Mater,2003,15(30):1797-1802.
[8] Jiang P,Bertone J F,Hwang K S,et al. Single-crystal colloidal multilayers of controlled thickness[J]. Chem. Mater.,1999,11:2132-2140.
[9] Mc Lachlan M A,Johnson N P,De La Rue R M,et al. Domain size and thickness control of thin film photonic crystals[J]. J. Mater. Chem,2005,15:369-371.
[10] Preda N,Enculescu M,Matei E,et al. The influence of synthesis parameters on size and morphology of poly(styrene-hydroxyethyl methacrylate)colloids[J]. Dig J. Nanomater Bios.,2010,5(4):1055-1065.
[11] Kim M H,Im S H,Park O O. Rapid fabrication of Two-and Three-dimensional colloidal crystal films via confined convective assembly[J]. Adv.Funct Mater,2005,15:1329-1335.
[12] Chen X,Sun Z Q,Zhang K,et al. Two-substrate vertical deposition for stable colloidal chips[J]. Chin. Sci. Bull.,2005,50(8):765-769.
[13] Piret F,Su B L. Effects of pH and ionic strength on the self-assembly of silica colloids to opaline photonic structures[J]. Chem. Phys. Lett.,2008,457:376-380.
[14] Rengarajan R,Mittleman D. Effect of disorder on the optical properties of colloidal crystals[J]. Phys. Rev. E,2005,71:016615-016625.