Dielectric functions of In1−xAlxSb alloys for arbitrary compositions with parametric modeling

By determining the parameters of the parametric model (PM) for selected Al compositions x of In1−xAlxSb, we provide the information needed to accurately calculate the room-temperature dielectric functions ε=ε1+iε2 of these alloys from 1.5 to 6.0eV as a continuous function of x over the entire compos...

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Bibliographic Details
Published in:Thin solid films 2013-11, Vol.546, p.26-30
Main Authors: Diware, Mangesh S., Kim, Tae Jung, Yoon, Jae Jin, Barange, Nilesh S., Byun, Jun Seok, Park, Han Gyeol, Kim, Young Dong, Shin, Sang Hoon, Song, Jin Dong
Format: Article
Language:English
Subjects:
Dielectric function
Ellipsometry
Exact sciences and technology
In1 − xAlxSb
Instruments, apparatus, components and techniques common to several branches of physics and astronomy
Optical instruments, equipment and techniques
Parametric model
Physics
Polarimeters and ellipsometers
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Summary:By determining the parameters of the parametric model (PM) for selected Al compositions x of In1−xAlxSb, we provide the information needed to accurately calculate the room-temperature dielectric functions ε=ε1+iε2 of these alloys from 1.5 to 6.0eV as a continuous function of x over the entire composition range 0≤x≤1. Our parameters are determined from data obtained by spectroscopic ellipsometry for Al compositions x=0.00, 0.142, 0.341, 0.539, 0.754, and 1.00. The PM dielectric functions are found to be in excellent agreement with the data. These results will be useful in many aspects of research and technology. •We report the dielectric functions of In1−xAlxSb alloys.•We used parametric model for this study.•We can represent dielectric functions for entire composition range from x=0 to 1.•The reconstructed data are in excellent agreement with the measured data.
ISSN:0040-6090
1879-2731
DOI:10.1016/j.tsf.2013.04.075