2019年6月5日星期三

Non-destructive measurement of carrier concentration in epitaxial gallium arsenide

Infra-red reflection measurements have been performed on specimens of n-type epitaxial gallium arsenide in the spectral range 10-200 cm−1. From measurements of the wavelength position of the plasma absorption edge the carrier concentration in these samples has been determined, using a calibration curve produced by measurements on bulk single-crystal samples of known concentration - between 1015 and 1017 carriers/cm3.



Source:IOPscience

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