Comment on "Optical characterization of CuIn1-xGaxSe2 alloy thin films by spectroscopic ellipsometry" [J. Appl. Phys. 94, 879 (2003)]

被引:0
|
作者
Han, Sung-Ho [1 ]
Levi, Dean [1 ]
机构
[1] Natl Renewable Energy Lab, Golden, CO 80401 USA
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D O I
10.1063/1.2374223
中图分类号
O59 [应用物理学];
学科分类号
摘要
A method to determine the optical functions of thin-film CuIn1-xGaxSe2 alloys was provided in the paper "Optical characterization of CuIn1-xGaxSe2 alloy thin films by spectroscopic ellipsometry." The optical functions were obtained and the effect of Ga content on the electronic transitions of CuIn1-xGaxSe2 was discussed. We indicate the mistake of their method in determining the critical point energies and discuss the reason for using standard analytic line shape, epsilon(omega)=C-Ae(i phi)(omega-E+i Gamma)(n), in this comment. (c) 2006 American Institute of Physics.
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