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.

Epitaxial Growth and Characterization of Nonpolar A-Plane AlGaN-Based Multiple Quantum Wells

2018 ◽  
Vol 934 ◽  
pp. 8-12
Author(s):  
Jian Guo Zhao ◽  
Xiong Zhang ◽  
Jia Qi He ◽  
Shuai Chen ◽  
Zi Li Wu ◽  
...  
Keyword(s):  
Quantum Wells ◽  
Chemical Vapor ◽  
Multiple Quantum Wells ◽  
Modulation Method ◽  
Duty Ratio ◽  
Organic Chemical ◽  
Multiple Quantum ◽  
X Ray Diffraction ◽  
Metal Organic

A serious of non-polar a-plane AlGaN-based multiple quantum wells (MQWs) were successfully grown on the semi-polar r-plane sapphire substrate with metal organic chemical vapor deposition technology. Intense MQWs-related emission peaks at an emission wavelength covered from 277-294 nm were observed based on the photoluminescence measurement. It was found that the employment of the trimethyl-aluminum (TMAl) flow duty-ratio modulation method which was developed based on the two-way pulsed-flows growth technique played a crucial role to control the Al composition of the non-polar a-plane AlGaN epi-layers. The non-polar a-plane AlGaN-based MQWs were deposited with the new developed TMAl flow duty-ratio modulation technique. Evident-3th order X-ray diffraction (XRD) satellite peak was observed from the high resolution-XRD measurement, proving the successful growth of non-polar a-plane AlGaN-based MQWs with abrupt hetero-interfaces.

Time-resolved photoluminescence measurements of InGaN light-emitting diodes, films, and multiple quantum wells

1999 ◽  
Author(s):  
Milan Pophristic ◽  
Frederick H. Long ◽  
Chuong A. Tran ◽  
Ian T. Ferguson ◽  
Robert F. Karlicek, Jr.
Keyword(s):  
Quantum Wells ◽  
Light Emitting Diodes ◽  
Multiple Quantum Wells ◽  
Multiple Quantum ◽  
Time Resolved ◽  
Light Emitting ◽  
Time Resolved Photoluminescence

Time-resolved photoluminescence measurements of quantum dots in InGaN multiple quantum wells and light-emitting diodes

1999 ◽  
Vol 86 (2) ◽  
pp. 1114-1118 ◽  
Author(s):  
M. Pophristic ◽  
F. H. Long ◽  
C. Tran ◽  
I. T. Ferguson ◽  
R. F. Karlicek
Keyword(s):  
Quantum Dots ◽  
Quantum Wells ◽  
Light Emitting Diodes ◽  
Multiple Quantum Wells ◽  
Multiple Quantum ◽  
Time Resolved ◽  
Light Emitting ◽  
Time Resolved Photoluminescence

scholarly journals Time-resolved photoluminescence of quaternary AlInGaN-based multiple quantum wells

2002 ◽  
Vol 80 (21) ◽  
pp. 3943-3945 ◽  
Author(s):  
Mee-Yi Ryu ◽  
C. Q. Chen ◽  
E. Kuokstis ◽  
J. W. Yang ◽  
G. Simin ◽  
...  
Keyword(s):  
Quantum Wells ◽  
Multiple Quantum Wells ◽  
Multiple Quantum ◽  
Time Resolved ◽  
Time Resolved Photoluminescence
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