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Determination of the direct band-gap energy of InAlAs matched to InP by photoluminescence excitation spectroscopy

A series of InxAl1-xAs samples (0.51≪x≪0.55)coherently grown on InP was studied in order to measure the band-gap energy of the lattice matched composition. As the substrate is opaque to the relevant photon energies, a method is developed to calculate the optical absorption coefficient from the photoluminescence excitation spectra. The effect of strain on the band-gap energy has been taken into account. For x=0.532, at 14 K we have obtained Eg0=1549±6 meV

© Journal of Applied Physics, 1997, vol. 81, núm. 10, p. 6916-6920

American Institute of Physics

Author: Roura Grabulosa, Pere
López-de Miguel, Manel
Cornet i Calveras, Albert
Morante i Lleonart, Joan R.
Date: 1997 May
Abstract: A series of InxAl1-xAs samples (0.51≪x≪0.55)coherently grown on InP was studied in order to measure the band-gap energy of the lattice matched composition. As the substrate is opaque to the relevant photon energies, a method is developed to calculate the optical absorption coefficient from the photoluminescence excitation spectra. The effect of strain on the band-gap energy has been taken into account. For x=0.532, at 14 K we have obtained Eg0=1549±6 meV
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Citation: Roura, P., López-de Miguel, M., Cornet, A., i Morante, J. R. (1997). Determination of the direct band-gap energy of InAlAs matched to InP by photoluminescence excitation spectroscopy. Journal of Applied Physics, 81 (10), 6916 - 6920. Recuperat 28 setembre 2010, a http://jap.aip.org/resource/1/japiau/v81/i10/p6916_s1
ISSN: 0021-8979
Document access: http://hdl.handle.net/10256/3048
Language: eng
Publisher: American Institute of Physics
Collection: Reproducció digital del document publicat a: http://dx.doi.org/10.1063/1.365253
Articles publicats (D-F)
Is part of: © Journal of Applied Physics, 1997, vol. 81, núm. 10, p. 6916-6920
Rights: Tots els drets reservats
Subject: Compostos d’alumini
Compostos d’indi
Fotoluminescència
Semiconductors
Aluminum compounds
Indium compounds
Photoluminescence
Title: Determination of the direct band-gap energy of InAlAs matched to InP by photoluminescence excitation spectroscopy
Type: info:eu-repo/semantics/article
Repository: DUGiDocs

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