[HTML][HTML] Strain-driven quantum dot self-assembly by molecular beam epitaxy

KE Sautter, KD Vallejo, PJ Simmonds - Journal of Applied Physics, 2020 - pubs.aip.org
Research into self-assembled semiconductor quantum dots (QDs) has helped advance
numerous optoelectronic applications, ranging from solid-state lighting to photodetectors. By …

Interplay effect of temperature and excitation intensity on the photoluminescence characteristics of InGaAs/GaAs surface quantum dots

Q Yuan, B Liang, C Zhou, Y Wang, Y Guo… - Nanoscale research …, 2018 - Springer
We investigate the optical properties of InGaAs surface quantum dots (SQDs) in a composite
nanostructure with a layer of similarly grown buried quantum dots (BQDs) separated by a …

Photoluminescence characterization of wetting layer and carrier dynamics for coupled InGaAs/GaAs surface quantum dot pair structures

J Liu, Q Yuan, B Liang, Q Yan, Y Wang, C Wang… - Optics …, 2020 - opg.optica.org
The optical properties are investigated by spectroscopic characterizations for bilayer
InGaAs/GaAs quantum dot (QD) structures consisting of a layer of surface quantum dots …

Type-II characteristics of photoluminescence from InGaAs/GaAs surface quantum dots due to Fermi level pinning effect

X Liu, J Liu, B Liang, Y Wang, Y Guo, C Wang… - Applied Surface …, 2022 - Elsevier
Abstract The In (Ga) As/GaAs surface quantum dots (SQDs) have become appealing
recently due to the special surface sensitivity property and consequently the advantage in …

Luminescence efficiency and carrier dynamics for InGaAs/GaAs surface quantum dots in coupled heterostructures

Y Dun, Y Wang, X Liu, Y Guo, YI Mazur, ME Ware… - Journal of …, 2024 - Elsevier
InGaAs/GaAs surface quantum dot (SQD) heterostructures have long been viewed as
having great potential for realizing environmental gas detection devices. The research has …

Anomalous photoluminescence of InAs surface quantum dots: intensity enhancement and strain control by underlying quantum dots

H Mohammadi, RC Roca, I Kamiya - Nanotechnology, 2022 - iopscience.iop.org
Strain control and photoluminescence (PL) enhancement of InAs surface quantum dots
(SQDs), exposed to ambient conditions, have been achieved by introducing underlying …

Photoluminescence characterization of interlayer carrier injection from InGaAs quantum well to InGaAs surface quantum dots with respect to GaAs spacer thickness

J Liu, H Li, X Liu, Y Wang, Y Guo, S Wang, G Fu… - Applied Surface …, 2023 - Elsevier
This work exploits carrier injection hybrid structures in which carriers are injected into a layer
of In 0.4 Ga 0.6 As surface quantum dots (SQDs) from an adjacent In 0.15 Ga 0.85 As …

Carrier Injection to In0.4Ga0.6As/GaAs Surface Quantum Dots in Coupled Hybrid Nanostructures

J Liu, S Luo, X Liu, Y Wang, C Wang, S Wang, G Fu… - Crystals, 2022 - mdpi.com
Stacking growth of the InGaAs quantum dots (QDs) on top of a carrier injection layer is a very
useful strategy to develop QD devices. This research aims to study the carrier injection effect …

Gas Sensitivity of In0.3Ga0.7As Surface QDs Coupled to Multilayer Buried QDs

G Wang, Z Liu, J Wang, Y Yang, X Liu, X Zhang… - Photonic Sensors, 2020 - Springer
A detailed analysis of the electrical response of In 0.3 Ga 0.7 As surface quantum dots
(SQDs) coupled to 5-layer buried quantum dots (BQDs) is carried out as a function of …

Lateral carrier transfer for high density InGaAs/GaAs surface quantum dots

Q Yuan, J Liu, B Liang, D Ren, Y Wang, Y Guo… - Journal of …, 2020 - Elsevier
Abstract In (Ga) As surface quantum dots (SQDs) are promising candidates for surface-
sensitive detection applications. As such, studies of the carrier dynamics are indispensable …