Reflectance of thinly oxidized silicon at normal incidence
Applied Optics, Vol. 18, Issue 12, pp. 1927-1932 (1979)
http://dx.doi.org/10.1364/AO.18.001927
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Abstract
Calculated values of reflectance at normal incidence for thinly oxidized silicon wafers are presented. The calculations, which use published, experimentally derived optical constants, cover the spectral range from ultraviolet (0.38 µm) to near infrared (1.24 µm). Oxide thickness varied in 0.1-µm steps from 0 to 1 µm, the range of practical interest to technologists in silicon and integrated circuits. Reflectance curves are correlated with the interference color chart for oxidized silicon. Finally, the dependence of reflectance on oxide thickness at three common laser wavelengths is graphed, for those interested in the recently developed endpoint detection techniques of plasma etching.
© 1979 Optical Society of America
Citation
Tony Huen, "Reflectance of thinly oxidized silicon at normal incidence," Appl. Opt. 18, 1927-1932 (1979)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-18-12-1927
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