Realization of high efficiency AlGaN-based multiple quantum wells grown on nano-patterned sapphire substrates

CrystEngComm ◽  
2020 ◽  
Author(s):  
Yuanhao Sun ◽  
Fujun Xu ◽  
Na Zhang ◽  
Jing Lang ◽  
Jiaming Wang ◽  
...  
Keyword(s):  
Critical Temperature ◽  
Quantum Wells ◽  
High Efficiency ◽  
Growth Conditions ◽  
Multiple Quantum Wells ◽  
Multiple Quantum ◽  
Sapphire Substrates ◽  
Patterned Sapphire Substrates

Growth of AlGaN-based multiple quantum wells (MQWs) has been attempted on nano-patterned sapphire substrates (NPSSs). By adopting a critical-temperature approach and optimizing the growth conditions of V/III ratio and Si...

Effects of Patterned Sapphire Substrates on Piezoelectric Field in Blue-Emitting InGaN Multiple Quantum Wells

2010 ◽  
Vol 31 (8) ◽  
pp. 842-844 ◽  
Author(s):  
Sang-Mook Kim ◽  
Hwa Sub Oh ◽  
Jong Hyeob Baek ◽  
Kwang-Ho Lee ◽  
Gun Young Jung ◽  
...  
Keyword(s):  
Quantum Wells ◽  
Multiple Quantum Wells ◽  
Multiple Quantum ◽  
Sapphire Substrates ◽  
Piezoelectric Field ◽  
Patterned Sapphire Substrates

High-efficiency electron-beam-pumped sub-240-nm ultraviolet emitters based on ultra-thin GaN/AlN multiple quantum wells grown by plasma-assisted molecular-beam epitaxy on c-Al2O3

2018 ◽  
Vol 11 (9) ◽  
pp. 091003 ◽  
Author(s):  
Valentin N. Jmerik ◽  
Dmitrii V. Nechaev ◽  
Alexey A. Toropov ◽  
Evgenii A. Evropeitsev ◽  
Vladimir I. Kozlovsky ◽  
...  
Keyword(s):  
Electron Beam ◽  
Molecular Beam Epitaxy ◽  
Quantum Wells ◽  
Molecular Beam ◽  
High Efficiency ◽  
Multiple Quantum Wells ◽  
Multiple Quantum

V-Defect and Dislocation Analysis in InGaN Multiple Quantum Wells on Patterned Sapphire Substrate

2018 ◽  
Vol 787 ◽  
pp. 37-41
Author(s):  
Huan You Wang ◽  
Qiao Lai Tan ◽  
Gui Jin
Keyword(s):  
Quantum Wells ◽  
Strain Relaxation ◽  
Chemical Vapor ◽  
Multiple Quantum ◽  
Cross Sectional ◽  
Patterned Sapphire Substrate ◽  
Sapphire Substrates ◽  
Transmission Electron ◽  
Multi Quantum Well ◽  
Patterned Sapphire Substrates

InGaN/GaN multiquantum well (MQW) structures have been grown on cone-shaped patterned sapphire substrates (CPSS) by metalorganic chemical vapor deposition (MOCVD). From the transmission electron microscopy (TEM) results, we found that most of the threading dislocations (TDs) in the trench region of the CPSS were bent by lateral growth mode. Also the staircase-like TDs were observed near the slant region of the cone pattern, they converged at the slope of the cone patterned region by staircase-upward propagation, which seems to effectively prevent TDs from vertical propagation in the trench region. The associated dislocation runs up into the overgrown GaN layer and MQW, and some (a+c) dislocations were shown to decompose inside the multi-quantum well, giving rise to a misfit segment in the c-plane and a V-shape defect. From cross-sectional TEM, we found that all V defects are not always connected with TDs at their bottom, some V defects are generated from the stacking mismatch boundaries induced by stacking faults which are formed within the MQW due to the strain relaxation.

Optimization of growth conditions for strain compensated Ga0.32In0.68As/Ga0.61In0.39As multiple quantum wells

1994 ◽  
Vol 65 (18) ◽  
pp. 2311-2313 ◽  
Author(s):  
A. D. Smith ◽  
A. T. R. Briggs ◽  
K. Scarrott ◽  
Xiao Zhou ◽  
U. Bangert
Keyword(s):  
Quantum Wells ◽  
Growth Conditions ◽  
Multiple Quantum Wells ◽  
Multiple Quantum

Optical properties of a-plane InGaN/GaN multiple quantum wells on r-plane sapphire substrates with different indium compositions

2009 ◽  
Vol 105 (6) ◽  
pp. 063105 ◽  
Author(s):  
C. H. Chiu ◽  
S. Y. Kuo ◽  
M. H. Lo ◽  
C. C. Ke ◽  
T. C. Wang ◽  
...  
Keyword(s):  
Optical Properties ◽  
Quantum Wells ◽  
Multiple Quantum Wells ◽  
Multiple Quantum ◽  
Sapphire Substrates

scholarly journals Luminescence in Highly Excited InGaN/GaN Multiple Quantum Wells Grown on GaN and Sapphire Substrates

2004 ◽  
Vol 106 (2) ◽  
pp. 273-279 ◽  
Author(s):  
S. Miasojedovas ◽  
S. Juršėnas ◽  
G. Kurilčik ◽  
A. Žukauskas ◽  
V.Ju. Ivanov ◽  
...  
Keyword(s):  
Quantum Wells ◽  
Multiple Quantum Wells ◽  
Multiple Quantum ◽  
Sapphire Substrates
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