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透明薄膜是一种光谱选择性材料,探明该膜系的光谱选择度,对于开发新型能源材料具有重要意义。作者研究了在 Al 和 Ag 基膜上分别沉积 SiO,SnO_2,CeO_2,ZnS 和 CdS 介质膜,组成 D/M 非对称膜系,测定了它们在320—1000nm 波长范围内的光谱透过率。证明各种介质膜对于金属基膜光谱选择度的影响基本相似,但对于透过率峰值的影响却明显不同;一般说来,介质膜对于 Ag 膜的光谱透过率会产生较大的增益,而且介质膜愈厚,增透性愈好。实验结果表明,采用 D/M 非对称膜系,有可能研制出光谱选择度满意的透明热反射镜材料。
Transparent film is a kind of spectrally selective material, and it is significant to discover the spectral selectivity of this film system for the development of new energy materials. The authors studied the deposition of SiO, SnO 2, CeO 2, ZnS and CdS films on Al and Ag based films to form D / M asymmetric films and measured their spectral transmittance in the wavelength range of 320-1000 nm. It is shown that the influence of various dielectric films on the spectral selectivity of metal-based films is similar, but the effects on the transmittance peaks are obviously different. Generally speaking, the dielectric film has a large gain for the spectral transmittance of Ag films, And the thicker the dielectric film, the more transparent the better. The experimental results show that using D / M asymmetric membrane system, it is possible to develop a transparent heat-reflecting mirror material with satisfactory spectral selectivity.