Optical absorption above the optical gap
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G.D. Cody; B.G. Brooks; B. Abeles
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Article
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1982
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Elsevier Science
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From transmission and reflection measurements on glow discharge prepared a-Si:Hx(x=0.09-0.19) films we obtain the imaginary part of the dielectric constant, e2 in the range 1.4 to 3.8 eV. We compare this data with the prediction of a model first introduced by Tauc for optical transitions, with momen