| Citation: |
Zhang Xiaolei, Kong Jincheng, Ma Qinghua, Wu Jun, Yang Yu, Ji Rongbin. Effect of the Surface of HgCdTe Epilayers on Infrared Transmission Spectra[J]. Journal of Semiconductors, 2005, In Press.
Zhang X L, Kong J C, Ma Q H, Wu J, Yang Y, Ji R B. Effect of the Surface of HgCdTe Epilayers on Infrared Transmission Spectra[J]. Chin. J. Semicond., 2005, 26(11): 2102.
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Effect of the Surface of HgCdTe Epilayers on Infrared Transmission Spectra
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Abstract
Infrared transmission spectra of liquid phase expitaxial Hg1-xCdxTe films are measured with a FTIR spectrometer.It is found that the as-grown Hg1-xCdxTe films have a declining absorption edge and a low transmission rate in intrinsic absorption spectra. Hg1-xCdxTe films are etched and the effects of etching are analyzed by SEM,electron probe analyzer,and surface profiler.These measurements indicate that the differences in concentration of mercury and surface flatness of Hg1-xCdxTe film surfaces result in differences in infrared transmission spectra.Band-band tail transition theories and surface scattering mechanism are used to interpret the phenomenon. -
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