Emission Mechanism of High Al-content AlGaN Multiple Quantum Wells

2016 ◽  
Vol 37 (5) ◽  
pp. 513-518
Author(s):  
李金钗 LI Jin-chai ◽  
季桂林 JI Gui-lin ◽  
杨伟煌 YANG Wei-huang ◽  
金 鹏 JIN Peng ◽  
陈航洋 CHEN Hang-yang ◽  
...  
Keyword(s):  
Quantum Wells ◽  
Multiple Quantum Wells ◽  
Multiple Quantum ◽  
Emission Mechanism ◽  
Al Content ◽  
High Al Content

High-speed solar-blind UV photodetectors using high-Al content Al0.64Ga0.36N/Al0.34Ga0.66N multiple quantum wells

2016 ◽  
Vol 10 (1) ◽  
pp. 011004 ◽  
Author(s):  
Sakib Muhtadi ◽  
Seong Mo Hwang ◽  
Antwon L. Coleman ◽  
Alexander Lunev ◽  
Fatima Asif ◽  
...  
Keyword(s):  
Quantum Wells ◽  
High Speed ◽  
Multiple Quantum Wells ◽  
Multiple Quantum ◽  
Uv Photodetectors ◽  
Al Content ◽  
Solar Blind ◽  
High Al Content

scholarly journals Role of Strain-Induced Microscale Compositional Pulling on Optical Properties of High Al Content AlGaN Quantum Wells for Deep-Ultraviolet LED

2022 ◽  
Vol 17 (1) ◽  
Author(s):  
Shiqiang Lu ◽  
Zongyan Luo ◽  
Jinchai Li ◽  
Wei Lin ◽  
Hangyang Chen ◽  
...  
Keyword(s):  
Optical Properties ◽  
Quantum Wells ◽  
Tensile Strain ◽  
Light Emitting Diode ◽  
Formation Enthalpy ◽  
Local Variation ◽  
Multiple Quantum ◽  
Al Content ◽  
Deep Ultraviolet ◽  
High Al Content

AbstractA systematic study was carried out for strain-induced microscale compositional pulling effect on the structural and optical properties of high Al content AlGaN multiple quantum wells (MQWs). Investigations reveal that a large tensile strain is introduced during the epitaxial growth of AlGaN MQWs, due to the grain boundary formation, coalescence and growth. The presence of this tensile strain results in the microscale inhomogeneous compositional pulling and Ga segregation, which is further confirmed by the lower formation enthalpy of Ga atom than Al atom on AlGaN slab using first principle simulations. The strain-induced microscale compositional pulling leads to an asymmetrical feature of emission spectra and local variation in emission energy of AlGaN MQWs. Because of a stronger three-dimensional carrier localization, the area of Ga segregation shows a higher emission efficiency compared with the intrinsic area of MQWs, which is benefit for fabricating efficient AlGaN-based deep-ultraviolet light-emitting diode.

FEMTOSECOND SPECTRAL HOLE-BURNING IN GaAs/AlGaAs MULTIPLE QUANTUM WELLS

1987 ◽  
Vol 48 (C5) ◽  
pp. C5-511-C5-515 ◽  
Author(s):  
J. L. OUDAR ◽  
J. DUBARD ◽  
F. ALEXANDRE ◽  
D. HULIN ◽  
A. MIGUS ◽  
...  
Keyword(s):  
Quantum Wells ◽  
Multiple Quantum Wells ◽  
Hole Burning ◽  
Spectral Hole Burning ◽  
Multiple Quantum ◽  
Spectral Hole

FAR INFRARED MAGNETO-ABSORPTION STUDY OF BARRIER IMPURITIES AND SCREENING IN GaAs/AlGaAs MULTIPLE QUANTUM WELLS

1987 ◽  
Vol 48 (C5) ◽  
pp. C5-239-C5-242 ◽  
Author(s):  
E. GLASER ◽  
B. V. SHANABROOK ◽  
R. J. WAGNER ◽  
R. L. HAWKINS ◽  
W. J. MOORE ◽  
...  
Keyword(s):  
Quantum Wells ◽  
Far Infrared ◽  
Multiple Quantum Wells ◽  
Multiple Quantum ◽  
Absorption Study

Fabrication and luminescent properties of core-shell InGaN/GaN multiple quantum wells on GaN nanopillars

2012 ◽  
Vol 100 (26) ◽  
pp. 261103 ◽  
Author(s):  
J.-R. Chang ◽  
S.-P. Chang ◽  
Y.-J. Li ◽  
Y.-J. Cheng ◽  
K.-P. Sou ◽  
...  
Keyword(s):  
Quantum Wells ◽  
Luminescent Properties ◽  
Multiple Quantum Wells ◽  
Core Shell ◽  
Multiple Quantum

Atomic scale characterization of GaInN/GaN multiple quantum wells in V-shaped pits

2011 ◽  
Vol 98 (18) ◽  
pp. 181904 ◽  
Author(s):  
Shigetaka Tomiya ◽  
Yuya Kanitani ◽  
Shinji Tanaka ◽  
Tadakatsu Ohkubo ◽  
Kazuhiro Hono
Keyword(s):  
Quantum Wells ◽  
Atomic Scale ◽  
Multiple Quantum Wells ◽  
Multiple Quantum ◽  
Scale Characterization

Novel Dual Wavelength Electro-Optical Bistability in InGaAs/AlGaAs Multiple Quantum Wells

1992 ◽  
Vol 31 (Part 2, No. 3B) ◽  
pp. L313-L315 ◽  
Author(s):  
Stephen Giugni ◽  
Kenji Kawashima ◽  
Kenzo Fujiwara ◽  
Naokatsu Sano
Keyword(s):  
Quantum Wells ◽  
Optical Bistability ◽  
Dual Wavelength ◽  
Multiple Quantum Wells ◽  
Multiple Quantum
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