Optical properties of amorphous CuInSe 2
Optical absorption spectra of polycrystalline and amorphous CuInSe 2 thin films were measured at room temperature in the photon energy range from 0.8 to 2.1 eV. In amorphous CuInSe 2 the absorption coefficient follows the relation α( hv) = A( hv− E 0)/ hv characteristic of optical transitions betwee...
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Published in | Solid state communications Vol. 42; no. 12; pp. 855 - 856 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
Elsevier Ltd
1982
|
Online Access | Get full text |
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Summary: | Optical absorption spectra of polycrystalline and amorphous CuInSe
2 thin films were measured at room temperature in the photon energy range from 0.8 to 2.1 eV. In amorphous CuInSe
2 the absorption coefficient follows the relation
α(
hv) =
A(
hv−
E
0)/
hv characteristic of optical transitions between extended states in both the valence and conduction band. The optical gap of
E
0 = 1.38 ± 0.01 eV is larger than the fundamental gap energy of
E
g
= 1.01 ± 0.01 eV in crystalline CuInSe
2. A comparison of the results for CuInSe
2 with those for ZnSe is given. |
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ISSN: | 0038-1098 1879-2766 |
DOI: | 10.1016/0038-1098(82)90224-1 |