Modeling Al<i>x</i>Ga1−<i>x</i>As optical constants as functions of composition

G. Snyder, Paul; A. Woollam, John; A. Alterovitz, Samuel; Johs, Blaine

doi:10.1063/1.346921

Public

Modeling AlxGa1−xAs optical constants as functions of composition

Published in Journal of Applied Physics • Dec 1, 1990

Authors:

Paul G. Snyder

John A. Woollam

Samuel A. Alterovitz

Abstract

Three models for the dielectric function εx(hν) of AlxGa1−xAs are reviewed. All are based on measured optical constants at discrete compositions. The validity of each model near critical point energies, and otherwise, is evaluated. Only the energy-shift model is appropriate over the entire available...

Subject

Dielectric function

Dielectric

Band gap

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