scholarly journals Above 25 nm emission wavelength shift in blue-violet InGaN quantum wells induced by GaN substrate misorientation profiling: towards broad-band superluminescent diodes

2020 ◽  
Vol 28 (15) ◽  
pp. 22524
Author(s):  
A. Kafar ◽  
R. Ishii ◽  
K. Gibasiewicz ◽  
Y. Matsuda ◽  
S. Stanczyk ◽  
...  
Keyword(s):  
Quantum Wells ◽  
Broad Band ◽  
Emission Wavelength ◽  
Wavelength Shift ◽  
Superluminescent Diodes ◽  
Ingan Quantum Wells

Indium incorporation and emission wavelength of polar, nonpolar and semipolar InGaN quantum wells

2012 ◽  
Vol 27 (2) ◽  
pp. 024014 ◽  
Author(s):  
Tim Wernicke ◽  
Lukas Schade ◽  
Carsten Netzel ◽  
Jens Rass ◽  
Veit Hoffmann ◽  
...  
Keyword(s):  
Quantum Wells ◽  
Emission Wavelength ◽  
Ingan Quantum Wells

scholarly journals The impact of point defects in n-type GaN layers on thermal decomposition of InGaN/GaN QWs

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Mikolaj Grabowski ◽  
Ewa Grzanka ◽  
Szymon Grzanka ◽  
Artur Lachowski ◽  
Julita Smalc-Koziorowska ◽  
...  
Keyword(s):  
Quantum Wells ◽  
High Temperatures ◽  
Point Defects ◽  
X Ray Diffraction ◽  
Helium Ions ◽  
X Ray ◽  
Sapphire Substrates ◽  
Transmission Electron ◽  
The Impact ◽  
Ingan Quantum Wells

AbstractThe aim of this paper is to give an experimental evidence that point defects (most probably gallium vacancies) induce decomposition of InGaN quantum wells (QWs) at high temperatures. In the experiment performed, we implanted GaN:Si/sapphire substrates with helium ions in order to introduce a high density of point defects. Then, we grew InGaN QWs on such substrates at temperature of 730 °C, what caused elimination of most (but not all) of the implantation-induced point defects expanding the crystal lattice. The InGaN QWs were almost identical to those grown on unimplanted GaN substrates. In the next step of the experiment, we annealed samples grown on unimplanted and implanted GaN at temperatures of 900 °C, 920 °C and 940 °C for half an hour. The samples were examined using Photoluminescence, X-ray Diffraction and Transmission Electron Microscopy. We found out that the decomposition of InGaN QWs started at lower temperatures for the samples grown on the implanted GaN substrates what provides a strong experimental support that point defects play important role in InGaN decomposition at high temperatures.

Rational construction of staggered InGaN quantum wells for efficient yellow light-emitting diodes

2021 ◽  
Vol 118 (18) ◽  
pp. 182102
Author(s):  
Xiaoyu Zhao ◽  
Bin Tang ◽  
Liyan Gong ◽  
Junchun Bai ◽  
Jiafeng Ping ◽  
...  
Keyword(s):  
Quantum Wells ◽  
Light Emitting Diodes ◽  
Yellow Light ◽  
Light Emitting ◽  
Rational Construction ◽  
Ingan Quantum Wells

Measuring temperature heterogeneities during solar-photothermal heating using quantum dot nanothermometry

The Analyst ◽  
2021 ◽  
Author(s):  
Stephanie K. Loeb ◽  
Haoran Wei ◽  
Jae-Hong Kim
Keyword(s):  
Quantum Dots ◽  
Quantum Dot ◽  
Fluorescence Emission ◽  
Emission Wavelength ◽  
Wavelength Shift ◽  
Cdse Quantum Dots ◽  
Photothermal Heating

The fluorescence emission wavelength shift of CdSe quantum dots due to heat-induced lattice dilatation is used to spatially resolve temperatures in solar photothermal systems.

Role of Metal Vacancies in the Mechanism of Thermal Degradation of InGaN Quantum Wells

2021 ◽  
Vol 13 (6) ◽  
pp. 7476-7484
Author(s):  
Julita Smalc-Koziorowska ◽  
Ewa Grzanka ◽  
Artur Lachowski ◽  
Roman Hrytsak ◽  
Mikolaj Grabowski ◽  
...  
Keyword(s):  
Thermal Degradation ◽  
Quantum Wells ◽  
Metal Vacancies ◽  
Ingan Quantum Wells

Directly correlated microscopy of trench defects in InGaN quantum wells

2021 ◽  
pp. 113255
Author(s):  
T.J. O'Hanlon ◽  
F C-P. Massabuau ◽  
A. Bao ◽  
M.J. Kappers ◽  
R.A. Oliver
Keyword(s):  
Quantum Wells ◽  
Ingan Quantum Wells ◽  
Correlated Microscopy

Strain-induced indium clustering in non-polar a-plane InGaN quantum wells

2018 ◽  
Vol 145 ◽  
pp. 109-122 ◽  
Author(s):  
Ja Kyung Lee ◽  
Bumsu Park ◽  
Kyung Song ◽  
Woo Young Jung ◽  
Dmitry Tyutyunnikov ◽  
...  
Keyword(s):  
Quantum Wells ◽  
Ingan Quantum Wells

Optical properties of extended and localized states in m-plane InGaN quantum wells

2013 ◽  
Vol 102 (10) ◽  
pp. 101102 ◽  
Author(s):  
S. Marcinkevičius ◽  
K. M. Kelchner ◽  
S. Nakamura ◽  
S. P. DenBaars ◽  
J. S. Speck
Keyword(s):  
Optical Properties ◽  
Quantum Wells ◽  
Localized States ◽  
Ingan Quantum Wells
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