Higher performance optoelectronic devices with In0. 21Al0. 21Ga0. 58As/In0. 15Ga0. 85As capping of III-V quantum dots

J Saha, D Panda, B Tongbram, D Das, V Chavan… - Journal of …, 2019 - Elsevier
Abstract Impact of combinational (In 0.21 Al 0.21 Ga 0.58 As/In 0.15 Ga 0.85 As and In 0.15
Ga 0.85 As/In 0.21 Al 0.21 Ga 0.58 As) capping on the strain, photoluminescence, and …

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 …

Optimization of hybrid InAs stranski krastanov and submonolayer quantum dot heterostructures and its effect on photovoltaic energy conversion efficiency in near …

D Das, DP Panda, B Tongbram, J Saha, V Chavan… - Solar Energy, 2018 - Elsevier
We are introducing here hybrid Stranski Krastanov (SK) on submonolayer (SML) quantum
dot (QD) heterostructure for improved photovoltaic energy conversion in the near infrared …

Impact of an InxGa1–xAs Capping Layer in Impeding Indium Desorption from Vertically Coupled InAs/GaAs Quantum Dot Interfaces

B Tongbram, S Sengupta… - ACS Applied Nano …, 2018 - ACS Publications
This study describes the effect of a thin GaAs spacer of 4.5 nm thickness in a bilayer-coupled
InAs quantum dot (QD) heterostructure. Here, we report the first demonstration of InAs/GaAs …

Minimization of material inter-diffusion for thermally stable quaternary-capped InAs quantum dot via strain modification

H Ghadi, N Sehara, P Murkute, S Chakrabarti - Superlattices and …, 2017 - Elsevier
In this study, a theoretical model is developed for investigating the effect of thermal
annealing on a single-layer quaternary-capped (In 0.21 Al 0.21 Ga 0.58 As) InAs quantum …

Enhancing optical characteristics of InAs/InGaAsSb quantum dot structures with long-excited state emission at 1.31 μm

WS Liu, HL Tseng, PC Kuo - Optics Express, 2014 - opg.optica.org
In this study, the optical properties of InAs quantum dots (QDs) with various strain-reducing
layers (SRLs) of GaAsSb and InGaAsSb are characterized using photoluminescence (PL) …

Antibacterial and optical properties of a new water soluble CdSe quantum dots coated by multidentate biopolymer

GR Bardajee, Z Hooshyar, F Jafarpour - Journal of Photochemistry and …, 2013 - Elsevier
A facile approach for surface passivation of water-soluble CdSe quantum dots (CdSe QDs)
by new water-soluble multidentate biopolymer based on poly ((2-dimethylaminoethyl) …

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 …

Research on the photoluminescence of spectral broadening by rapid thermal annealing on InAs/GaAs quantum dots

D Ning, Y Chen, X Li, D Liang, S Ma… - Journal of …, 2020 - iopscience.iop.org
Photoluminescence (PL) test was conducted to investigate the effect of rapid thermal
annealing (RTA) on the optical performance of self-assembled InAs/GaAs quantum dots …

Tuning the optoeletronic characteristics of strain coupled InAs/GaAs bilayer quantum dot heterostructures through compositional and structural variabilities

J Saha, D Panda, S Chakrabarti - Superlattices and Microstructures, 2018 - Elsevier
Strain coupled quantum dots are the high priority research topic of the present day scientific
community. The ability to enhance the photoluminescence properties is very important for …