scholarly journals The role of InGaN quantum barriers in improving the performance of GaN-based laser diodes

2022 ◽  
Vol 145 ◽  
pp. 107523
Author(s):  
Yuhao Ben ◽  
Feng Liang ◽  
Degang Zhao ◽  
Jing Yang ◽  
Zongshun Liu ◽  
...  
Keyword(s):  
2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Agata Bojarska-Cieślińska ◽  
Łucja Marona ◽  
Julita Smalc-Koziorowska ◽  
Szymon Grzanka ◽  
Jan Weyher ◽  
...  

AbstractIn this work we investigate the role of threading dislocations in nitride light emitters with different indium composition. We compare the properties of laser diodes grown on the low defect density GaN substrate with their counterparts grown on sapphire substrate in the same epitaxial process. All structures were produced by metalorganic vapour phase epitaxy and emit light in the range 383–477 nm. We observe that intensity of electroluminescence is strong in the whole spectral region for devices grown on GaN, but decreases rapidly for the devices on sapphire and emitting at wavelength shorter than 420 nm. We interpret this behaviour in terms of increasing importance of dislocation related nonradiative recombination for low indium content structures. Our studies show that edge dislocations are the main source of nonradiative recombination. We observe that long wavelength emitting structures are characterized by higher average light intensity in cathodoluminescence and better thermal stability. These findings indicate that diffusion path of carriers in these samples is shorter, limiting the amount of carriers reaching nonradiative recombination centers. According to TEM images only mixed dislocations open into the V-pits, usually above the multi quantum wells thus not influencing directly the emission.


2017 ◽  
Vol 76-77 ◽  
pp. 584-587
Author(s):  
D. Monti ◽  
M. Meneghini ◽  
C. De Santi ◽  
G. Meneghesso ◽  
E. Zanoni ◽  
...  
Keyword(s):  

2009 ◽  
Vol 6 (S2) ◽  
pp. S844-S847 ◽  
Author(s):  
Matteo Meneghini ◽  
Nicola Trivellin ◽  
Gaudenzio Meneghesso ◽  
Lorenzo Trevisanello ◽  
Enrico Zanoni ◽  
...  
Keyword(s):  

2007 ◽  
Vol 90 (12) ◽  
pp. 121126 ◽  
Author(s):  
G. Deligeorgis ◽  
G. Dialynas ◽  
Z. Hatzopoulos ◽  
N. T. Pelekanos

2011 ◽  
Vol 110 (3) ◽  
pp. 033113 ◽  
Author(s):  
A. Martín-Martín ◽  
P. Iñiguez ◽  
J. Jiménez ◽  
M. Oudart ◽  
J. Nagle

1998 ◽  
Author(s):  
Remzi Yildirim ◽  
Kenan Danisman ◽  
Fatih V. Celebi ◽  
Ahmet Ozek

2018 ◽  
Vol 116 ◽  
pp. 114-121 ◽  
Author(s):  
Agata Bojarska ◽  
Jakub Goss ◽  
Szymon Stanczyk ◽  
Irina Makarowa ◽  
Dario Schiavon ◽  
...  

Author(s):  
M. Meneghini ◽  
N. Trivellin ◽  
L.-R. Trevisanello ◽  
K. Orita ◽  
M. Yuri ◽  
...  

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