Low-Dimensional Materials and Devices 2023 2023
DOI: 10.1117/12.2677942
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In-situ tailoring of band alignment between strain-coupled surface and buried InAs/GaAs quantum dots for sensor applications

Manas R. Mantri,
Debi P. Panda,
Rajib Saha
et al.

Abstract: This paper reports a comparative study of InAs/GaAs quantum dots (QDs) heterostructures with vertically aligned strain-coupled uncapped and capped buried dots, epitaxially grown by solid-state MBE. Here an in-situ method is used to optimize the band alignment among the coupled QD heterostructures. In this work, the stable uncapped QDs are grown with reduced surface energy using the self-assembly growth technique called Stranski Krastanov (SK) QDs. During growth we reduced the Indium flux to the top uncapped QD… Show more

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