Theoretical and experimental studies of the effects of rapid thermal annealing in GaAs/AlGaAs quantum dots grown by droplet epitaxy

Title
Theoretical and experimental studies of the effects of rapid thermal annealing in GaAs/AlGaAs quantum dots grown by droplet epitaxy
Authors
문필경하승규송진동임주영S. BounouarF. DonatiniL. S. DangJ. P. PoizatJ. S. Kim최원준한일기이정일
Issue Date
2010-07
Publisher
ICPS2010
Citation
, P1-127
Abstract
Droplet epitaxy (DE) is a novel growth method based on molecular beam epitaxy, which allows for the fabrication of a large variety of nanostructures with different geometries, ranging from quantum dots (QDs), quantum dot molecules, single ring, and concentric rings. Recently, we fabricated low-density GaAs/AlGaAs QDs for single photon source by DE. Unlike Stranski-Krastanov (S-K) method, DE enables the formation of QDs even with the materials with small lattice mismatch. In this research, we theoretically and experimentally investigate the effects of rapid thermal annealing (RTA) on the optical properties and emission tunability of the GaAs/AlGaAs QDs grown by DE. We calculated a diffusion length from the emission peak shift of underlying GaAs/AlGaAs superlattice (SL), and investigated the effects of RTA on the optical properties of the QDs.
URI
http://pubs.kist.re.kr/handle/201004/37913
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KIST Publication > Conference Paper
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