Line shape of the optical dielectric function
- 4 April 1988
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 52 (14) , 1176-1178
- https://doi.org/10.1063/1.99641
Abstract
A systematic study of the optical dielectric function by spectroscopic ellipsometry and electroreflectance has shown that the proper functional form for the Green’s function for an electron-hole pair in GaAs or CdTe is primarily Gaussian, not Lorentzian as is commonly assumed, although it is primarily Lorentzian for Hg1−xCdxTe. The Lorentzian part of the broadening is shown to measure the alloy, impurity, and defect scattering.Keywords
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