Optical Investigation of the Influence of Substrate Orientation on Spontaneous Ordering in Ga0.5In0.5P Alloy

K. Sinha; A. Mascarenhas; R. G. Alonso; G. S. Horner; K. A. Bertness; S. R. Kurtz; J. M. Olson

doi:10.1016/0038-1098(94)90068-X

Optical Investigation of the Influence of Substrate Orientation on Spontaneous Ordering in Ga0.5In0.5P Alloy

K. Sinha, A. Mascarenhas, R. G. Alonso, G. S. Horner, K. A. Bertness, S. R. Kurtz, J. M. Olson

Materials Science

National Renewable Energy Laboratory

Research output: Contribution to journal › Article › peer-review

13 Scopus Citations

Abstract

The influence of substrate misorientation on the electronic structure of ordered Ga_0.5In_0.5P is investigated by piezomodulated reflectivity, photoluminescence and photoluminescence excitation spectroscopy. A "U"-shaped dependence of the band gap on the misorientation angle is observed. In addition, we have investigated the dependence of the crystal field and spin-orbit splitting, photoluminescence linewidth and the Stokes shift on substrate misorientation in these materials. The dependence of the crystal field and spin orbit splitting on the band gap of the alloy is found to be independent of substrate misorientation and is shown to be in reasonable agreement with a theoretical model relating these quantities to the long range order parameter in the alloy. The PL linewidth and Stokes shift both decrease with increasing band gap.

Original language	American English
Pages (from-to)	843-847
Number of pages	5
Journal	Solid State Communications
Volume	89
Issue number	10
DOIs	https://doi.org/10.1016/0038-1098(94)90068-X https://doi.org/10.1016/0038-1098(94)90068-X
State	Published - 1994

NREL Publication Number

NREL/JA-451-6114

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title = "Optical Investigation of the Influence of Substrate Orientation on Spontaneous Ordering in Ga0.5In0.5P Alloy",

abstract = "The influence of substrate misorientation on the electronic structure of ordered Ga0.5In0.5P is investigated by piezomodulated reflectivity, photoluminescence and photoluminescence excitation spectroscopy. A {"}U{"}-shaped dependence of the band gap on the misorientation angle is observed. In addition, we have investigated the dependence of the crystal field and spin-orbit splitting, photoluminescence linewidth and the Stokes shift on substrate misorientation in these materials. The dependence of the crystal field and spin orbit splitting on the band gap of the alloy is found to be independent of substrate misorientation and is shown to be in reasonable agreement with a theoretical model relating these quantities to the long range order parameter in the alloy. The PL linewidth and Stokes shift both decrease with increasing band gap.",

author = "K. Sinha and A. Mascarenhas and Alonso, {R. G.} and Horner, {G. S.} and Bertness, {K. A.} and Kurtz, {S. R.} and Olson, {J. M.}",

year = "1994",

doi = "10.1016/0038-1098(94)90068-X",

language = "American English",

volume = "89",

pages = "843--847",

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T1 - Optical Investigation of the Influence of Substrate Orientation on Spontaneous Ordering in Ga0.5In0.5P Alloy

AU - Sinha, K.

AU - Mascarenhas, A.

AU - Alonso, R. G.

AU - Horner, G. S.

AU - Bertness, K. A.

AU - Kurtz, S. R.

AU - Olson, J. M.

PY - 1994

Y1 - 1994

N2 - The influence of substrate misorientation on the electronic structure of ordered Ga0.5In0.5P is investigated by piezomodulated reflectivity, photoluminescence and photoluminescence excitation spectroscopy. A "U"-shaped dependence of the band gap on the misorientation angle is observed. In addition, we have investigated the dependence of the crystal field and spin-orbit splitting, photoluminescence linewidth and the Stokes shift on substrate misorientation in these materials. The dependence of the crystal field and spin orbit splitting on the band gap of the alloy is found to be independent of substrate misorientation and is shown to be in reasonable agreement with a theoretical model relating these quantities to the long range order parameter in the alloy. The PL linewidth and Stokes shift both decrease with increasing band gap.

AB - The influence of substrate misorientation on the electronic structure of ordered Ga0.5In0.5P is investigated by piezomodulated reflectivity, photoluminescence and photoluminescence excitation spectroscopy. A "U"-shaped dependence of the band gap on the misorientation angle is observed. In addition, we have investigated the dependence of the crystal field and spin-orbit splitting, photoluminescence linewidth and the Stokes shift on substrate misorientation in these materials. The dependence of the crystal field and spin orbit splitting on the band gap of the alloy is found to be independent of substrate misorientation and is shown to be in reasonable agreement with a theoretical model relating these quantities to the long range order parameter in the alloy. The PL linewidth and Stokes shift both decrease with increasing band gap.

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U2 - 10.1016/0038-1098(94)90068-X

DO - 10.1016/0038-1098(94)90068-X

M3 - Article

AN - SCOPUS:0028396111

SN - 0038-1098

VL - 89

SP - 843

EP - 847

JO - Solid State Communications

JF - Solid State Communications

IS - 10

ER -

Optical Investigation of the Influence of Substrate Orientation on Spontaneous Ordering in Ga0.5In0.5P Alloy

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