Steady-state recombination lifetimes in polar InGaN/GaN quantum wells by time-resolved photoluminescence

2019 ◽  
Vol 58 (SC) ◽  
pp. SCCB07 ◽  
Author(s):  
Renlin Zhou ◽  
Masao Ikeda ◽  
Feng Zhang ◽  
Jianping Liu ◽  
Shuming Zhang ◽  
...  
Keyword(s):  
Steady State ◽  
Quantum Wells ◽  
Time Resolved ◽  
Recombination Lifetimes ◽  
Time Resolved Photoluminescence

Optical Transitions and Recombination Lifetimes in GaN and InGaN Epilayers, and InGaN/GaN and GaN/AlGaN Multiple Quantum Wells

1996 ◽  
Vol 449 ◽  
Author(s):  
M. Smith ◽  
J. Y. Lin ◽  
H. X. Jiang ◽  
A. Khan ◽  
Q. Chen ◽  
...  
Keyword(s):  
Quantum Wells ◽  
Chemical Vapor ◽  
Multiple Quantum Wells ◽  
Organic Chemical ◽  
Multiple Quantum ◽  
Optical Transitions ◽  
Time Resolved ◽  
Metal Organic ◽  
Recombination Lifetimes ◽  
Time Resolved Photoluminescence

ABSTRACTTime-resolved photoluminescence (PL) has been employed to study the optical transitions and their dynamical processes in GaN and InxGa1-xN epilayers, and GaN/GaN and GaN/ALxGa1-xN multiple quantum wells (MQW). We compare the results from both metal-organic chemical vapor deposition (MOCVD) and molecular beam epitaxy (MBE) grown samples. In addition, results are also compared with GaAs/ALxGa1-xAs MQW. It was found for all samples that the low temperature emission lines were dominated by radiative recombination transitions of either localized or free excitons, which demonstrates the high quality and purity of these III-nitride materials.

Time-resolved photoluminescence and steady-state optical studies of GaInNAs and GaInAs single quantum wells

2007 ◽  
Vol 4 (2) ◽  
pp. 667-670 ◽  
Author(s):  
Y. Sun ◽  
L. Lombez ◽  
P. F. Braun ◽  
B. Ulug ◽  
A. Ulug ◽  
...  
Keyword(s):  
Steady State ◽  
Quantum Wells ◽  
Single Quantum ◽  
Optical Studies ◽  
Time Resolved ◽  
Time Resolved Photoluminescence

Optical Study of Localized and Delocalized States in GaAsN/GaAs

2003 ◽  
Vol 798 ◽  
Author(s):  
Z. Y. Xu ◽  
X. D. Luo ◽  
X. D. Yang ◽  
P. H. Tan ◽  
C. L. Yang ◽  
...  
Keyword(s):  
Quantum Wells ◽  
Rapid Thermal Annealing ◽  
Short Pulse ◽  
Selective Excitation ◽  
Excitation Power ◽  
Pulse Excitation ◽  
Optical Study ◽  
Time Resolved ◽  
Exciton Localization ◽  
Time Resolved Photoluminescence

ABSTRACTTaking advantages of short pulse excitation and time-resolved photoluminescence (PL), we have studied the exciton localization effect in a number of GaAsN alloys and GaAsN/GaAs quantum wells (QWs). In the PL spectra, an extra transition located at the higher energy side of the commonly reported N-related emissions is observed. By measuring PL dependence on temperature and excitation power along with PL dynamics study, the new PL peak has been identified as a transition of the band edge-related recombination in dilute GaAsN alloy and delocalized transition in QWs. Using selective excitation PL we further attribute the localized emission in QWs to the excitons localized at the GaAsN/GaAs interfaces. This interface-related exciton localization could be greatly reduced by a rapid thermal annealing.

Steady state and time-resolved photoluminescence properties of alternating polyfluorene copolymers

2003 ◽  
Vol 135-136 ◽  
pp. 387-388 ◽  
Author(s):  
A. Charas ◽  
J. Morgado ◽  
L. Alcácer ◽  
J.M.G. Martinho ◽  
F. Cacialli
Keyword(s):  
Steady State ◽  
Photoluminescence Properties ◽  
Time Resolved ◽  
Time Resolved Photoluminescence

Evaluation of hole-spin superposition in GaAs/AlGaAs quantum wells through time-resolved photoluminescence measurements

2014 ◽  
Vol 104 (25) ◽  
pp. 252406
Author(s):  
Tetsu Ito ◽  
Hideki Gotoh ◽  
Masao Ichida ◽  
Hiroaki Ando
Keyword(s):  
Quantum Wells ◽  
Time Resolved ◽  
Time Resolved Photoluminescence

Tuning the excited-state deactivation pathways of dinuclear ruthenium(ii) 2,2′-bipyridine complexes through bridging ligand design

2020 ◽  
Vol 49 (24) ◽  
pp. 8096-8106 ◽  
Author(s):  
Simon Cerfontaine ◽  
Ludovic Troian-Gautier ◽  
Sara A. M. Wehlin ◽  
Frédérique Loiseau ◽  
Emilie Cauët ◽  
...  
Keyword(s):  
Excited State ◽  
Steady State ◽  
Variable Temperature ◽  
Ligand Design ◽  
Binuclear Complexes ◽  
Time Resolved ◽  
Bridging Ligand ◽  
Dinuclear Ruthenium ◽  
Photophysical Study ◽  
Time Resolved Photoluminescence

A detailed photophysical study of binuclear complexes was performed using steady-state and time-resolved photoluminescence measurements at variable temperature. The results were compared with the prototypical [Ru(bpy)3]2+.

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