Effect of Growth Rate of the Band Gap of Ga0.5In0.5P

Sarah R. Kurtz; J. M. Olson; A. Kibbler

doi:10.1063/1.104013

Effect of Growth Rate of the Band Gap of Ga0.5In0.5P

Sarah R. Kurtz, J. M. Olson, A. Kibbler

Materials Science

National Renewable Energy Laboratory

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101 Scopus Citations

Abstract

The band gap of Ga_0.5In_0.5P is reported as a function of growth rate and growth temperature. The Ga_0.5In_0.5P is grown lattice matched to 2 °-off (100) GaAs substrates by atmospheric pressure organometallic chemical vapor deposition using an inlet group V/III ratio of 65. The variation of the band gap is surprisingly complex, taking five different functional forms within the two-dimensional parameter space. These include regions in which the band gap (1) increases with growth rate, (2) decreases with growth rate, (3) is independent of both growth rate and temperature, (4) is independent of growth rate, but dependent on growth temperature, and (5) is not measurable since three-dimensional, instead of two-dimensional, growth is observed. The behavior can only be explained by a theory involving competing processes. One such theory is described.

Original language	American English
Pages (from-to)	1922-1924
Number of pages	3
Journal	Applied Physics Letters
Volume	57
Issue number	18
DOIs	https://doi.org/10.1063/1.104013 https://doi.org/10.1063/1.104013
State	Published - 1990

NREL Publication Number

ACNR/JA-212-11605

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title = "Effect of Growth Rate of the Band Gap of Ga0.5In0.5P",

abstract = "The band gap of Ga0.5In0.5P is reported as a function of growth rate and growth temperature. The Ga0.5In0.5P is grown lattice matched to 2 °-off (100) GaAs substrates by atmospheric pressure organometallic chemical vapor deposition using an inlet group V/III ratio of 65. The variation of the band gap is surprisingly complex, taking five different functional forms within the two-dimensional parameter space. These include regions in which the band gap (1) increases with growth rate, (2) decreases with growth rate, (3) is independent of both growth rate and temperature, (4) is independent of growth rate, but dependent on growth temperature, and (5) is not measurable since three-dimensional, instead of two-dimensional, growth is observed. The behavior can only be explained by a theory involving competing processes. One such theory is described.",

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AB - The band gap of Ga0.5In0.5P is reported as a function of growth rate and growth temperature. The Ga0.5In0.5P is grown lattice matched to 2 °-off (100) GaAs substrates by atmospheric pressure organometallic chemical vapor deposition using an inlet group V/III ratio of 65. The variation of the band gap is surprisingly complex, taking five different functional forms within the two-dimensional parameter space. These include regions in which the band gap (1) increases with growth rate, (2) decreases with growth rate, (3) is independent of both growth rate and temperature, (4) is independent of growth rate, but dependent on growth temperature, and (5) is not measurable since three-dimensional, instead of two-dimensional, growth is observed. The behavior can only be explained by a theory involving competing processes. One such theory is described.

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Effect of Growth Rate of the Band Gap of Ga0.5In0.5P

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