scholarly journals Reduction of efficiency droop in InGaN light emitting diodes by coupled quantum wells

2008 ◽  
Vol 93 (17) ◽  
pp. 171113 ◽  
Author(s):  
Xianfeng Ni ◽  
Qian Fan ◽  
Ryoko Shimada ◽  
Ümit Özgür ◽  
Hadis Morkoç
Keyword(s):  
Quantum Wells ◽  
Light Emitting Diodes ◽  
Efficiency Droop ◽  
Coupled Quantum Wells ◽  
Light Emitting

Carrier leakage effect on efficiency droop in InGaN/GaN light-emitting diodes

2016 ◽  
Vol 30 (20) ◽  
pp. 1650221 ◽  
Author(s):  
Yang Huang ◽  
Zhiqiang Liu ◽  
Xiaoyan Yi ◽  
Yao Guo ◽  
Shaoteng Wu ◽  
...  
Keyword(s):  
Quantum Wells ◽  
Light Emitting Diodes ◽  
Efficiency Droop ◽  
Nonradiative Recombination ◽  
Leakage Currents ◽  
Light Emitting ◽  
New Model ◽  
Leakage Effect ◽  
Text Model ◽  
The Common

A new model for efficiency droop in InGaN/GaN light-emitting diodes (LEDs) is proposed, where the primary nonradiative recombination mechanisms, including Shockley–Read–Hall (SRH), Auger and carrier leakage, are considered. A room-temperature external quantum efficiency (EQE) measurement was performed on our designed samples and analyzed by the new model. Owing to advantages over the common “[Formula: see text] model”, the “new model” is able to effectively extract recombination coefficients and calculate the leakage currents of the hole and electron. From this new model, we also found that hole leakage is distinct at low injection, while it disappears at high injection, which is contributed to the weak blocking effect of electron in quantum wells (QWs) at low injection.

Efficiency droop alleviation in InGaN/GaN light-emitting diodes by graded-thickness multiple quantum wells

2010 ◽  
Vol 97 (18) ◽  
pp. 181101 ◽  
Author(s):  
C. H. Wang ◽  
S. P. Chang ◽  
W. T. Chang ◽  
J. C. Li ◽  
Y. S. Lu ◽  
...  
Keyword(s):  
Quantum Wells ◽  
Light Emitting Diodes ◽  
Efficiency Droop ◽  
Multiple Quantum Wells ◽  
Multiple Quantum ◽  
Light Emitting ◽  
Graded Thickness

Efficiency droop suppression of InGaN-based blue light-emitting diodes using dip-shaped quantum wells

2016 ◽  
Vol 213 (5) ◽  
pp. 1187-1192 ◽  
Author(s):  
Huimin Lu ◽  
Tongjun Yu ◽  
Yuebin Tao ◽  
Xingbin Li ◽  
Zhizhong Chen ◽  
...  
Keyword(s):  
Quantum Wells ◽  
Blue Light ◽  
Light Emitting Diodes ◽  
Efficiency Droop ◽  
Light Emitting

scholarly journals Efficiency Droop Improvement in InGaN/GaN Light-Emitting Diodes by Graded-Composition Multiple Quantum Wells

2013 ◽  
Vol 5 (2) ◽  
pp. 8200208-8200208 ◽  
Author(s):  
Li-Hong Zhu ◽  
Wei Liu ◽  
Fan-Ming Zeng ◽  
Yu-Lin Gao ◽  
Bao-Lin Liu ◽  
...  
Keyword(s):  
Quantum Wells ◽  
Light Emitting Diodes ◽  
Efficiency Droop ◽  
Multiple Quantum Wells ◽  
Multiple Quantum ◽  
Light Emitting
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