Theoretical correlation and effect of annealing on the photoresponse of vertically strain-coupled In0. 5Ga0. 5As/GaAs quantum dot heterostructures

D Panda, J Saha, D Das, SM Singh, H Rawool… - Journal of Applied …, 2019 - pubs.aip.org
Here, we propose a different approach for growing strain-coupled In 0.5 Ga 0.5 As quantum
dot infrared photodetectors (QDIPs) with varying dot layer periodicity. Strain calculation is …

Vertically coupled hybrid InAs sub-monolayer on InAs Stranski–Krastanov quantum dot heterostructure: toward next generation broadband IR detection

D Das, J Saha, D Panda, B Tongbram… - IEEE Transactions …, 2019 - ieeexplore.ieee.org
In the present article, we are introducing a novel heterogeneously coupled InAs
Submonolayer (SML) on Stranski-Krastanov (SK) quantum dot (QD) heterostructure with …

Strain relaxation in InAs quantum dots through capping layer variation and its impact on the ultrafast carrier dynamics

A Chatterjee, D Panda, J Patwari… - Semiconductor …, 2019 - iopscience.iop.org
Ultrafast carrier dynamics is found to be crucial for influencing the efficiency of quantum dot
(QD)-based optoelectronic devices. Here, we have studied picosecond resolved dynamics …

Influence of a dual-stabiliser formed by 3-morpholinoethanesulfonic and 3-mercaptopropionic acids on the photophysical, electrochemical and …

RAC Palomino, MA Zon, H Fernández… - Journal of …, 2024 - Elsevier
In order to obtain an emitter nanoprobe for applications in aqueous solutions, we
synthesised quantum dots of CdSe (CdSe QDs) in aqueous solutions, which were stabilised …

Impact of Sb Composition on Strain Profile of GaAs1-xSbx Capped InAs Quantum Dots

JS Krishna, D Panda… - IEEE Transactions on …, 2019 - ieeexplore.ieee.org
A detail theoretical investigation on strain distribution of InAs quantum dot (QD) capped with
GaAs 1-x Sb x has been carried out. The transition from type-I to type-II with varying Sb …

Atomistic approach to the strain field in finite-sized heterostructures

TO Cheche - Computer Physics Communications, 2023 - Elsevier
The numerical code AS_LBFG_v2 developed to simulate the atomic elastic relaxation in
finite-sized heterostructures is introduced. To minimize the elastic energy the L-BFGS …

Comparison of parameter variation of InAs quantum dots embedded in GaAs/Al0.30Ga0.70As structures with different capping/buffer quantum wells at annealing

RC Tamayo, TV Torchynska, G Polupan… - Journal of Materials …, 2023 - Springer
The emission variation with annealing in GaAs/Al0. 30Ga0. 70As structures with quantum
dots of InAs (QDs) located in different capping/buffer wells (QWs) is investigated. Two types …

Strain minimization of InAs QDs heterostructures using dual quaternary-ternary/ternary-quaternary capping materials via digital alloy capping layer approach

R Kumar, J Saha, S Chakrabarti - IEEE Transactions on …, 2022 - ieeexplore.ieee.org
The role of combinational (ternary and quaternary) capping layers to understand the strain
distribution mechanism and optical properties through digital alloy capping layer (DACL) …

Ultrafast electronic spectroscopy on the coupling of Stranski-Krastanov and submonolayer quantum dots for potential application in near infrared light harvesting

A Chatterjee, D Das, J Patwari… - Materials Research …, 2019 - iopscience.iop.org
Heterogeneously coupled self-assembled InAs QDs are always attractive to study their
unique physical properties. Here, we have introduced Stranski-Krastanov (SK) grown …

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 …