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Method and device for in situ quantification, by reflectometry, of the morphology of a localized region during etching of the surface layer of a thin-film structure
Method and device for in situ quantification, by reflectometry, of the morphology of a localized region during etching of the surface layer of a thin-film structure
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机译:在薄膜结构的表面层的蚀刻过程中通过反射法原位量化局部区域的形态的方法和装置
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摘要
An illumination beam is sent onto a localized region of the surface layer of a thin-film structure which is being etched in a vacuum processing chamber. The reflective light beam is sent through a filter to the matrix sensor of a video camera, and to an optical disperser or an interference filter, a selection diaphragm, a fiber-optic cable, and an analysis slit at the input of the optical disperser or interference filter. A spectral analysis of the reflective light beam is performed to detect, by reflectometry, the transition of the following layer in a specific analysis region of the localized region.
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