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Optical Properties of CuInSe2 Bulk Material Characterized by a Fixed Polarizer–Rotating Analyzer Spectroscopic Ellipsometer

Author:
M. L. Hidalgo   M. Lachab   A. Zouaoui   M. Alhamed   C. Llinares   J. P. Peyrade   J. Galibert  


Issue Date:
1997


Abstract(summary):

Abstract

In the present paper, we have investigated the optical properties of CuInSe2 single and polycrystals using a broad band fixed polarizer–rotating analyzer spectroscopic ellipsometer (RAE) in the spectral range 250 to 1700 nm. The wavelength dependence of CuInSe2 optical constants was studied assuming a two-phase system: the ambient medium and the sample. We have determined interband transition energies near and above the bandgap by a detailed analysis of the absorption spectrum and through the third joint-density-of-states (JDOS) derivative computation. Measurements were carried out on nearly-stoichiometric and In-rich CuInSe2 substrates.



Page:
297-305


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