Electrical and optical properties of GaInAsP grown by gas-source molecular beam epitaxy

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Abstract

GaxIn1−xAsyP1−y layers were grown on InP substrates by gas‐source molecular beam epitaxy in order to study the electrical and optical properties of the quaternaries. Hall mobilities and carrier concentrations of Si‐ and Be‐doped quaternary layers were compared in the alloys for different wavelengths. Smaller hole concentrations were observed for the alloy compositions close to InP than for those close to GaInAs grown with the same Be cell temperature. In addition, the highest achievable hole concentration was found to be a function of the alloy composition. Possible reasons for the observations are discussed. The influence of pregrowth treatments on the measured Hall mobilities and carrier concentrations due to the changes in the substrate‐epilayer interfacial conductivity was studied. Room‐temperature photoluminescence results are also presented.
Original languageEnglish
Article number4565
JournalJournal of Applied Physics
Volume74
DOIs
Publication statusPublished - 1993
MoE publication typeA1 Journal article-refereed

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molecular beam epitaxy
electrical properties
optical properties
gases
photoluminescence
conductivity
cells
wavelengths
temperature

Cite this

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title = "Electrical and optical properties of GaInAsP grown by gas-source molecular beam epitaxy",
abstract = "GaxIn1−xAsyP1−y layers were grown on InP substrates by gas‐source molecular beam epitaxy in order to study the electrical and optical properties of the quaternaries. Hall mobilities and carrier concentrations of Si‐ and Be‐doped quaternary layers were compared in the alloys for different wavelengths. Smaller hole concentrations were observed for the alloy compositions close to InP than for those close to GaInAs grown with the same Be cell temperature. In addition, the highest achievable hole concentration was found to be a function of the alloy composition. Possible reasons for the observations are discussed. The influence of pregrowth treatments on the measured Hall mobilities and carrier concentrations due to the changes in the substrate‐epilayer interfacial conductivity was studied. Room‐temperature photoluminescence results are also presented.",
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Electrical and optical properties of GaInAsP grown by gas-source molecular beam epitaxy. / Tappura, K.

In: Journal of Applied Physics, Vol. 74, 4565, 1993.

Research output: Contribution to journalArticleScientificpeer-review

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AB - GaxIn1−xAsyP1−y layers were grown on InP substrates by gas‐source molecular beam epitaxy in order to study the electrical and optical properties of the quaternaries. Hall mobilities and carrier concentrations of Si‐ and Be‐doped quaternary layers were compared in the alloys for different wavelengths. Smaller hole concentrations were observed for the alloy compositions close to InP than for those close to GaInAs grown with the same Be cell temperature. In addition, the highest achievable hole concentration was found to be a function of the alloy composition. Possible reasons for the observations are discussed. The influence of pregrowth treatments on the measured Hall mobilities and carrier concentrations due to the changes in the substrate‐epilayer interfacial conductivity was studied. Room‐temperature photoluminescence results are also presented.

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