GaAs1−yBiy Raman signatures: illuminating relationships between the electrical and optical properties of GaAs1−yBiy and Bi incorporation
Source abstract
Abstract
We report the use of two Raman signatures, the Bi-induced longitudinal-optical-plasmon-coupled (LOPC) mode and the GaAs Fröhlich scattering intensity, present in nominally undoped (100) GaAs1−yBiy to predict the 300K photoluminescence intensity and Bi composition (y) in GaAs1−yBiy. The LOPC mode is used to calculate the hole concentration in GaAs1−yBiy epitaxial layers. A linear relationship between hole concentration and photoluminescence intensity is found for a range of samples grown at various temperatures and growth rates. In addition, the composition (y) of Bi in GaAs1−yBiy is also found to be linearly related to the GaAs Fröhlich scattering intensity.
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Research context
OpenAlex topics: Semiconductor Quantum Structures and Devices · Chalcogenide Semiconductor Thin Films · Quantum Dots Synthesis And Properties
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Affiliations
Duke University 1 Department of Electrical and Computer Engineering, , Durham, NC, 27708 USA
University of Wisconsin-Madison 2 Department of Chemical and Biological Engineering, , Madison, WI 53706 USA
University of Wisconsin-Madison 3 Department of Electrical and Computer Engineering, , Madison, WI 53706 USA
Duke University 4 Department of Physics, , Durham, NC, 27708 USA
Funding
National Science Foundation
References (19)
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