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研究了由 Al 和 Ag 为基膜,SiO、SnO_2、CeO_2、ZnS 或 CdS 为介质层所组成的非对称型D/M 光学膜系在320—1000nm 波长范围内的光谱吸光恃性。发现单一的 Al 和 Ag 膜在750—950nm 范围内具有相当强烈的吸光作用;在 D/M 膜系中,金属(M)膜层愈厚,光谱吸光度愈大。介质(D)膜的性质对于光谱吸光特性有密切的关系。一般说来,当介质膜厚度相等时,膜系吸光度的光谱选择度相同。通过对 D/M 膜系的光谱透过率、光谱吸光度和色度的研究,可望开拓适用干节能和新能源的新型材料。
The asymmetric D / M optical films composed of Al, Ag as base films, SiO, SnO 2, CeO 2, ZnS and CdS as dielectric layers were studied for spectral absorption in the wavelength range of 320-1000 nm. It was found that a single Al and Ag film had a very strong absorption of light in the range of 750-950 nm. In the D / M film system, the thicker the metal (M) film was, the greater the spectral absorbance was. The properties of the medium (D) film are closely related to the spectral absorption properties. In general, when the dielectric film thickness is equal, the spectral selectivity of the film-based absorbance is the same. By studying the spectral transmittance, spectral absorbance and chromaticity of the D / M film system, it is expected to develop new materials suitable for dry energy saving and new energy sources.