We report analytic expressions that accurately represent the dielectric functions ε = ε<SUB>1</SUB> + iε<SUB>2</SUB> of In<SUB>x</SUB>Al<SUB>1-x</SUB>As from 1.5 to 6 eV. We use the dielec...
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https://www.riss.kr/link?id=A107737629
Kim, T.J. ; Park, J.C. ; Barange, N.S. ; Park, H.G. ; Kang, Y.R. ; Nam, K.H. ; Kim, Y.D.
2015
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KCI등재,SCOPUS,SCIE
학술저널
30-34(5쪽)
0
상세조회0
다운로드다국어 초록 (Multilingual Abstract)
We report analytic expressions that accurately represent the dielectric functions ε = ε<SUB>1</SUB> + iε<SUB>2</SUB> of In<SUB>x</SUB>Al<SUB>1-x</SUB>As from 1.5 to 6 eV. We use the dielec...
We report analytic expressions that accurately represent the dielectric functions ε = ε<SUB>1</SUB> + iε<SUB>2</SUB> of In<SUB>x</SUB>Al<SUB>1-x</SUB>As from 1.5 to 6 eV. We use the dielectric function parametric model, which portrays ε as a sum of polynomials and can accommodate the asymmetric nature of critical-point transitions. The ε spectra were obtained previously by spectroscopic ellipsometry for compositions x = 0, 0.10, 0.43, 0.62, 0.75, and 1. The ε data are successfully reconstructed and parameterized in excellent agreement with the data by seven polynomials. Our results allow ε to be determined as a continuous function of In composition and energy over the ranges given above, and ε can be converted to the complex refractive index using a simple relationship.