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首页> 外文期刊>European Journal of Glass Science and Technology, PartB. Physics and Chemistry of Glasses >Kinetics of optically-and thermally-induced diffusion and dissolution of silver in evaporated As_(33)S_(33.5)Se_(33.5) amorphous films; their properties and structure
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Kinetics of optically-and thermally-induced diffusion and dissolution of silver in evaporated As_(33)S_(33.5)Se_(33.5) amorphous films; their properties and structure

机译：光学和热诱导银在蒸发的As_（33）S_（33.5）Se_（33.5）非晶膜中扩散和溶解的动力学;它们的性质和结构

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摘要

As_(33)S_(33.5)Se_(33.5) amorphous films were prepared by the vacuum thermal evaporation technique. Silver film was also deposited on top of As_(33)S_(33.5)Se_(33.5) film by the same technique. The films with known silver concentrations and good optical quality were prepared by step-by-step optically - and thermally - induced diffusion and dissolution. The range of silver concentration was 0-25 at percent. The kinetics of optically - and thermally - induced diffusion and dissolution of silver in As_(33)S_(33.5)Se_(33.5) amorphous films were measured by optically monitoring the change in thickness of undoped chalcogenide during broadband illumination. Rutherford backscattering spectroscopy was used for obtaining silver depth profiles. Compositions and microanalysis of reaction products have been determined by an electron scanning microscope and energy dispersive x-ray microanalyser. Optical properties of thin films were observed and calculated by the Swanepoel method. Refractive index has been shown to be increasing toward higher silver concentration. The value of this refractive index (nonlinear refractive index) difference (An) between undoped and silver doped films is about 0.4 (1.67 X 10~(-10)[esu]). Decreasing E_(g,opt) dependence on silver concentration was determined (AE_(g,opt)~0.4 eV). Raman spectroscopy was used to establish films structure.
机译：通过真空热蒸发技术制备了As_（33）S_（33.5）Se_（33.5）非晶膜。通过相同的技术，银膜也沉积在As_（33）S_（33.5）Se_（33.5）膜的顶部。通过逐步光学和热诱导的扩散和溶解来制备具有已知银浓度和良好光学质量的薄膜。银浓度范围为0-25at％。通过光学监测宽带照明过程中未掺杂硫族化物的厚度变化，测量了光和热诱导的银在As_（33）S_（33.5）Se_（33.5）非晶膜中的扩散和溶解动力学。卢瑟福背散射光谱法用于获得银的深度剖面。反应产物的组成和微分析已通过电子扫描显微镜和能量色散X射线微分析仪确定。观察薄膜的光学性质，并通过Swanepoel方法计算。折射率已经显示出朝着更高的银浓度增加。未掺杂和银掺杂的膜之间的该折射率（非线性折射率）差（An）的值约为0.4（1.67×10 10（-10）es）。确定了对银浓度的降低的E_（g，opt）依赖性（AE_（g，opt）〜0.4 eV）。拉曼光谱法用于建立膜结构。

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