Evaluation of different capping strategies in the InAs/GaAs QD system: Composition, size and QD density features

D González, S Flores, N Ruiz-Marín, DF Reyes… - Applied Surface …, 2021 - Elsevier
In this work, two different strategies to preserve InAs/GaAs QDs against decomposition
during the capping process have been compared structurally and optically. They are based …

Viability of intermediate band solar cells based on InAs/GaAs submonolayer quantum dots and the role of surface reconstruction

T Borrely, A Alzeidan, MD de Lima… - Solar Energy Materials …, 2023 - Elsevier
The effects of growth conditions on InAs/GaAs submonolayer-quantum-dot solar cells are
still a little explored topic, and the literature shows contradictory results regarding the …

Ameliorating the optical and structural properties of InAs quantum dot heterostructures through digital alloy capping materials: Theory and experiment

R Kumar, J Saha, D Panda, R Kumar, SA Gazi… - Optical Materials, 2020 - Elsevier
In this study, we have employed a unique technique called digital alloy capping to grow the
strain reducing capping layer on InAs quantum dots (QDs). Four different capping materials …

Impact of digital alloy capping layers on bilayer InAs quantum dot heterostructures

R Kumar, J Saha, S Chakrabarti - IEEE Transactions on …, 2020 - ieeexplore.ieee.org
The influence of digital alloy capping technique on the strain-coupled bilayer InAs quantum
dots (QDs) has been presented. Multiple capping layers of different composition have been …

Shifting the plasmonic resonance to infrared region for AlP by inducing high S concentration: Indirect to direct band gap

H Ahmoum, G Li, M Boughrara, M Kerouad… - Physica B: condensed …, 2023 - Elsevier
In this work, structural, electronic, dielectric and thermoelectric properties of AlP with the
presence of sulfur (S) impurities with various concentrations to form A l 1 P 1− x S x with x …

Annealing Impact on Emission of InAs Quantum Dots in GaAs/Al0.30Ga0.70As Structures with Different Capping Layers

TV Torchynska, RC Tamayo, G Polupan… - Journal of Electronic …, 2021 - Springer
The impact of annealing on the emission of InAs quantum dots (QDs) has been investigated
in the GaAs/Al0. 30Ga0. 70As structures with different compositions of the quantum well …

Emission and HR-XRD varying in GaAs/AlGaInAs heterostructures with InAs quantum dots at annealing

G Polupan, T Torchynska, LG Vega Macotela… - Journal of Materials …, 2020 - Springer
Abstract GaAs/Al 0.30 Ga 0.70 As/AlGaInAs/heterostructures grown by molecular beam
epitaxy with embedded InAs quantum dots (QDs) have been investigated before and after …

A comparative analysis of analog and digital alloy technique of InxGa1-xAs capping material on InAs quantum dot heterostructures

R Kumar, J Saha, S Chakrabarti - Nanophotonics VIII, 2020 - spiedigitallibrary.org
In this study, the concept of analog and digital alloy capping with ternary alloy In x Ga 1-x As
has been utilized in capping layer of InAs QDs. The composition of indium (In) in the capping …

Hybrid stranski-krastanov/submonolayer quantum dot heterostructure with type-II band alignment: an efficient way of near infrared photovoltaic energy conversion

S Choudhary, D Das, J Saha, D Panda… - Journal of …, 2021 - Elsevier
Photoabsorption throughout the entire solar spectrum and successive efficient photovoltaic
energy conversion are always being the primary goal in the domain of solar energy …

An analytical approach to study annealing induced interdiffusion of In and Ga for truncated pyramidal InAs/GaAs quantum dots

I Mal, DP Panda, B Tongbram… - IEEE Transactions …, 2020 - ieeexplore.ieee.org
A strain-assisted model for studying the annealing induced interdiffusion of constituent
atoms in truncated pyramidal InAs/GaAs self-assembled quantum dot (QD) is developed. In …