Optical constants of GaxIn1-xP lattice matched to GaAs

Mathias Schubert, V. Gottschalch, Craig M. Herzinger, Huade Yao, Paul G. Snyder, John A. Woollam

Research output: Contribution to journalArticle

71 Citations (Scopus)

Abstract

The optical constants of Ga0.51In0.49P have been determined from 0.8 to 5.0 eV using variable-angle spectroscopic ellipsometry measurements at room temperature. The metal-organic vapor-phase-epitaxy-grown samples were x-ray analyzed to confirm lattice matching to the GaAs substrate. The effects of the native oxide were numerically removed from the data to determine the intrinsic optical constants. This is important because the optical constants reported become generally useful for modeling multiple-layer structures. A Kramers-Kronig analysis was used to reduce interference-related fluctuations in the below-gap refractive index. Near the band edge a mathematical form for excitonic absorption was included. Critical point energies were extracted using a numerical second-derivative fitting algorithm.

Original languageEnglish (US)
Pages (from-to)3416-3419
Number of pages4
JournalJournal of Applied Physics
Volume77
Issue number7
DOIs
StatePublished - Dec 1 1995

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vapor phase epitaxy
ellipsometry
critical point
refractivity
interference
oxides
room temperature
metals
x rays
energy

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Optical constants of GaxIn1-xP lattice matched to GaAs. / Schubert, Mathias; Gottschalch, V.; Herzinger, Craig M.; Yao, Huade; Snyder, Paul G.; Woollam, John A.

In: Journal of Applied Physics, Vol. 77, No. 7, 01.12.1995, p. 3416-3419.

Research output: Contribution to journalArticle

Schubert, M, Gottschalch, V, Herzinger, CM, Yao, H, Snyder, PG & Woollam, JA 1995, 'Optical constants of GaxIn1-xP lattice matched to GaAs', Journal of Applied Physics, vol. 77, no. 7, pp. 3416-3419. https://doi.org/10.1063/1.358632
Schubert, Mathias ; Gottschalch, V. ; Herzinger, Craig M. ; Yao, Huade ; Snyder, Paul G. ; Woollam, John A. / Optical constants of GaxIn1-xP lattice matched to GaAs. In: Journal of Applied Physics. 1995 ; Vol. 77, No. 7. pp. 3416-3419.
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