A comprehensive analysis of strain profile in the heterogeneously coupled Stranski-Krastanov (SK) on Submonolayer (SML) quantum dot heterostructures

S Choudhary, J Saha, B Tongbram, D Panda… - Journal of Alloys and …, 2020 - Elsevier
In this study, we demonstrate a detailed strain analysis of the heterogeneously coupled
Stranski Krastanov (SK) on Submonolayer (SML) InAs quantum dot heterostructures with …

Design of high-precision ROIC for quantum dot infrared photodetector

HS Gupta, ASK Kumar, MS Baghini… - IEEE Photonics …, 2016 - ieeexplore.ieee.org
Read out integrated circuit (ROIC) design for quantum dot infrared photodetector (QDIP)
array requires large charge handling capacity, low readout noise, minimum detector bias …

The impact of confinement enhancement AlGaAs barrier on the optical and structural properties of InAs/InGaAs/GaAs submonolayer quantum dot heterostructures

D Das, H Ghadi, B Tongbram, SM Singh… - Journal of …, 2017 - Elsevier
The effect of additional Al X Ga 1− X As barrier layer on luminescence and structural
behaviors of four cycle InAs/In 0.15 Ga 0.85 As/GaAs based quantum dots (ie, standard …

Hybrid strain-coupled multilayer SK and SML InAs/GaAs quantum dot heterostructure: Enabling higher absorptivity and strain minimization for enhanced optical and …

R Gourishetty, D Panda, S Dongre, J Saha… - Journal of …, 2021 - Elsevier
The size and shape of self-assembled quantum dots (QDs) in the top layer of a strain-
coupled multilayer Stranski-Krastanov (SK) type QD heterostructure is decided by the effect …

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 …

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 …

Tracing the two-to three-dimensional transition in InAs/GaAs sub-monolayer quantum dot growth

JS Kim, SK Noh, SJ Lee, M Hopkinson - Applied Surface Science, 2020 - Elsevier
A two-to three-dimensional (2D to 3D) transition in InAs/GaAs sub-monolayer quantum dot
(SML-QD) growth was investigated, and its evolution was traced. From the AFM results, the …

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 …

Incorporation of quaternary (In0. 22Al0. 22Ga0. 56As) capping in pip QDIPs for efficient minimization of hole-assisted dark current

VP Deviprasad, S Mondal, S Paul, B Tongbram… - Infrared Physics & …, 2019 - Elsevier
This study describes the effect of the introduction of a quaternary capping layer (In 0.22 Al
0.22 Ga 0.56 As) above each active region of pip quantum dot infrared photo-detectors. We …

Theoretical Study on Vertically Coupled Stranski-Krastanov (SK) on Sub Monolayer (SML) InAs Quantum Dot Heterostructures Employing Ternary and Quaternary …

R Kumar, S Choudhary, J Saha… - IEEE Transactions on …, 2023 - ieeexplore.ieee.org
This work presents the impact of barrier spacer on the structural and optical properties of
strain-coupled Stranski-Krastanov (SK) on Sub Monolayer (SML) quantum dot (QD) …