Anisotropy in the optical absorption of Ag–SiO2 thin films with oblique columnar structures
Anisotropy in the optical absorption of Ag–SiO2 thin films with oblique columnar structures
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斜柱状结构Ag-SiO2薄膜光吸收的各向异性
DOI：
10.1063/1.351368
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发表时间：
1992
影响因子：
3.2
通讯作者：
Y. Taga
中科院分区：
文献类型：
--
作者：
Motofumi Suzuki;Y. Taga
试图澄清的光学吸收和纳米结构的薄膜制备的倾斜共沉积的Ag和SiO2的各向异性。在低浓度的Ag下，柱状结构朝向SiO2的蒸气流的入射方向生长，并且Ag作为小的金属颗粒分散在该结构中。当Ag从与SiO2助熔剂的入射方向相反的膜表面的法线侧沉积时，获得Ag颗粒的不均匀分布。由于嵌入在倾斜柱状结构中的小Ag颗粒的影响，光学透射率强烈地依赖于入射光的入射角和入射光的偏振。Ag和SiO2杂化膜的各向异性光吸收特性可用作无机偏振器。
An attempt has been made to clarify the anisotropy in the optical absorption and nanostructure of thin films prepared by oblique codeposition of Ag and SiO2. At a low concentration of Ag, the columnar structure grows toward the incident direction of vapor flux of SiO2, and Ag is dispersed in that structure as small metallic particles. An inhomogeneous distribution of Ag particles is obtained when Ag is deposited from the side of the normal to the film surface opposite to that of the incident direction of SiO2 flux. The optical transmittance is strongly dependent on the angle of incidence and the polarization of the incident light due to the effects of the small Ag particles embedded in the oblique columnar structure. The anisotropic optical absorption of Ag and SiO2 hybrid films can be used as an inorganic polarizer.