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Optical properties of hybrid quantum-well–dots nanostructures grown by MOCVD
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posted on 2018-12-07, 00:00 authored by Alexey Zhukov, Alexey Nadtochiy, M.V. Maximov, N.A. Kalyuzhnyy, S. Rouvimov, S.A. MintairovThe deposition of InxGa1 – xAs with an indium content of 0.3–0.5 and an average thickness of 3– 27 single layers on a GaAs wafer by metalorganic chemical vapor deposition (MOCVD) at low temperatures results in the appearance of thickness and composition modulations in the layers being formed. Such struc- tures can be considered to be intermediate nanostructures between ideal quantum wells and quantum dots. Depending on the average thickness and composition of the layers, the wavelength of the photoluminescence peak for the hybrid InGaAs quantum well–dots nanostructures varies from 950 to 1100 nm. The optimal aver- age InxGa1 – xAs thicknesses and compositions at which the emission wavelength is the longest with a high quantum efficiency retained are determined.
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2018-12-07Language
- English
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1063-7826Publisher
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