Impact of Rotation Rate on Bismuth Saturation in GaAsBi Grown by Molecular Beam Epitaxy
Source abstract
Abstract
GaAs 1− x Bi x has been grown by solid-source molecular beam epitaxy using varying substrate rotation rates. Changes in local bismuth saturation were studied by varying the Bi/Ga pressure ratio across the wafer. Films were grown on both GaAs and InGaAs buffer layers with varying indium content to change the strain conditions of the bismide layer and the out-of-plane growth rate. All samples demonstrated vertical composition modulations with a period of ∼ 4 nm that tracked with the rate of growth per substrate rotation cycle. The thermal stability of these composition modulations was shown to behave similarly to bulk GaAsBi. Bismide composition modulations are attributed to the low growth temperature and the varying Bi/Ga pressure ratio across the sample rather than the varying V/III ratio.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Semiconductor Quantum Structures and Devices · Semiconductor materials and devices · GaN-based semiconductor devices and materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (35)
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