Progress in infrared photodetectors since 2000

C Downs, TE Vandervelde - Sensors, 2013 - mdpi.com
The first decade of the 21st-century has seen a rapid development in infrared photodetector
technology. At the end of the last millennium there were two dominant IR systems, InSb-and …

GaSb∕ GaAs type II quantum dot solar cells for enhanced infrared spectral response

RB Laghumavarapu, A Moscho… - Applied Physics …, 2007 - pubs.aip.org
The authors report an enhanced infrared spectral response of GaAs-based solar cells that
incorporate type II GaSb quantum dots (QDs) formed using interfacial misfit array growth …

Light confinement and mode splitting in rolled-up semiconductor microtube bottle resonators

C Strelow, CM Schultz, H Rehberg, M Sauer… - Physical Review B …, 2012 - APS
We report on the controlled light confinement in microtube bottle resonators formed by rolled-
up strained semiconductor bilayers. We experimentally and theoretically discuss two …

Optical coefficients in a semiconductor quantum ring: Electric field and donor impurity effects

CM Duque, RE Acosta, AL Morales, ME Mora-Ramos… - Optical Materials, 2016 - Elsevier
The electron states in a two-dimensional quantum dot ring are calculated in the presence of
a donor impurity atom under the effective mass and parabolic band approximations. The …

Room-temperature operation type-II GaSb/GaAs quantum-dot infrared light-emitting diode

SY Lin, CC Tseng, WH Lin, SC Mai, SY Wu… - Applied physics …, 2010 - pubs.aip.org
A GaSb/GaAs quantum-dot light-emitting diode (QD LED) with a single GaSb QD layer is
investigated in this paper. The room-temperature photoluminescence peak blueshift with …

Self-Organized Formation of Quantum Rings

R Timm, H Eisele, A Lenz, L Ivanova, G Balakrishnan… - Physical review …, 2008 - APS
Ring-shaped GaSb/GaAs quantum dots, grown by molecular beam epitaxy, were studied
using cross-sectional scanning tunneling microscopy. These quantum rings have an outer …

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 …

Lasing characteristics of GaSb∕ GaAs self-assembled quantum dots embedded in an InGaAs quantum well

J Tatebayashi, A Khoshakhlagh, SH Huang… - Applied Physics …, 2007 - pubs.aip.org
The authors report the optical characteristics of Ga Sb∕ Ga As self-assembled quantum
dots (QDs) embedded in an InGaAs quantum well (QW). Variations in the In composition of …

Quantum ring formation and antimony segregation in GaSb∕ GaAs nanostructures

R Timm, A Lenz, H Eisele, L Ivanova… - Journal of Vacuum …, 2008 - pubs.aip.org
GaSb quantum rings in GaAs were studied by cross-sectional scanning tunneling
microscopy. The quantum rings have an outer shape of a truncated pyramid with typical …

GaSb/GaAs quantum dot formation and demolition studied with cross-sectional scanning tunneling microscopy

EP Smakman, JK Garleff, RJ Young, M Hayne… - Applied Physics …, 2012 - pubs.aip.org
We present a cross-sectional scanning tunneling microscopy study of GaSb/GaAs quantum
dots grown by molecular beam epitaxy. Various nanostructures are observed as a function …