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仪器网/ 行业应用/ 解决方案/ 椭圆偏振光谱仪测量化合物半导体:AlxGa1-xNGaN异质结构

椭圆偏振光谱仪测量化合物半导体:AlxGa1-xNGaN异质结构

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Liquid Crystal Modulation Spectroscopic Ellipsometry is an excellent technique for the highly accurate characterization of the compound semiconductor heterostructure AlGaN / GaN. Using the MM-16 spectroscopic ellipsometer it is a straightforward procedure to determine the film thickness and optical dispersions of the complete structure even where the film is several microns thick.
The detailed knowledge of the optical parameters of AlGaN alloys is crucial for example for the design of opto-electronic devices.
Furthermore, from the optical parameters a calibration curve could be constructed to provide a rapid and efficient determination of the Al content in the AlGaN layers. Thus Spectroscopic Ellipsometry also proves a non-destructive technique for AlGaN alloy composition determination.
This method can be equally applied to other compound semiconductors such as SiGe, II-VI semiconductors or classical III-V semiconductors. 研究级经典型椭偏仪 UVISEL
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