Enhanced performance of InGaN light-emitting diodes with InGaN and composition-graded InGaN interlayers
The effects of InGaN light-emitting diodes (LEDs) with InGaN and composition-graded InGaN interlayers in the space of multiple quantum wells and electron blocking layer are studied numerically. The electrostatic field, energy band diagrams, carrier concentrations, light–current–voltage performances,...
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Published in | Applied physics. A, Materials science & processing Vol. 116; no. 4; pp. 1757 - 1760 |
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Main Authors | , |
Format | Journal Article |
Language | English |
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Berlin/Heidelberg
Springer Berlin Heidelberg
2014
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Abstract | The effects of InGaN light-emitting diodes (LEDs) with InGaN and composition-graded InGaN interlayers in the space of multiple quantum wells and electron blocking layer are studied numerically. The electrostatic field, energy band diagrams, carrier concentrations, light–current–voltage performances, and internal quantum efficiency (IQE) are investigated. Simulation results show that the light output power and IQE are both largely improved over the conventional LED structure due to the improvement in hole injection efficiency and electron blocking capability, especially for the LED with composition-graded InGaN interlayer. |
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AbstractList | The effects of InGaN light-emitting diodes (LEDs) with InGaN and composition-graded InGaN interlayers in the space of multiple quantum wells and electron blocking layer are studied numerically. The electrostatic field, energy band diagrams, carrier concentrations, light–current–voltage performances, and internal quantum efficiency (IQE) are investigated. Simulation results show that the light output power and IQE are both largely improved over the conventional LED structure due to the improvement in hole injection efficiency and electron blocking capability, especially for the LED with composition-graded InGaN interlayer. |
Author | Yang, Yu-Jue Zeng, Yi-Ping |
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Cites_doi | 10.1063/1.2963029 10.1063/1.3571440 10.1063/1.3012388 10.1063/1.3244203 10.1063/1.2988324 10.1063/1.3678197 10.1063/1.3153508 10.1109/LPT.2009.2021155 10.1063/1.1600519 10.1038/nphoton.2009.32 10.1063/1.2805197 10.1364/OL.35.003285 10.1002/lpor.200710019 10.1126/science.1108712 |
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Keywords | Barrier Height Energy Band Diagram Internal Quantum Efficiency Potential Barrier Height Electron Blocking Layer |
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SubjectTerms | Characterization and Evaluation of Materials Condensed Matter Physics Machines Manufacturing Nanotechnology Optical and Electronic Materials Physics Physics and Astronomy Processes Surfaces and Interfaces Thin Films |
Title | Enhanced performance of InGaN light-emitting diodes with InGaN and composition-graded InGaN interlayers |
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