journal article·2022-06-01Open access

Effect of barrier thickness on photoelectric properties of InGaN/GaN asymmetric multiple-quantum-well structure light-emitting diode

Li-E. Cai, Bao-Ping Zhang, Hao-Xiang Lin, Zai-Jun Cheng, Peng-Peng Ren, Zhi-Chao Chen, Jin-Man Huang, Lin-Lin Cai

AIP Advances· Volume 12· Issue 6

Abstract

GaN/GaInN asymmetric multiple quantum well light-emitting diodes with varying potential barrier thicknesses (5 and 15 nm) are grown by using metal organic chemical vapor deposition. The narrow barrier structure improves the performance of the device, including the super-linear increase of electroluminescence integral intensity, the mitigation of efficiency droop at high current density, the reduction of wavelength drift, the reduction of forward voltage, and the improvement of wall-plug efficiency. This is due to the narrowing of the thickness of the quantum barrier, which results in the smaller electric field among the quantum well, the weakening of the quantum confinement Stark effect, the more uniform distribution of carriers across the active region of the device, and the suppression of electron leakage.
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Research context

OpenAlex topics: GaN-based semiconductor devices and materials · Semiconductor Quantum Structures and Devices · Ga2O3 and related materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

School of Optoelectronic and Communication Engineering, Xiamen University of Technology 1 , Xiamen 361024, China

Fujian Provincial Key Laboratory of Optoelectronic Technologies and Devices 2 , Xiamen 361024, China

Department of Electronic Engineering, Optoelectronics Engineering Research Center, College of Electronic Science and Technology (National Model Microelectronics College), Xiamen University 3 , Xiamen 361005, China

School of Electronic and Information Engineering, Beihang University 4 , Beiijng 100083, China

Xiamen AnMaiXin Automation Technology Co., Ltd. 5 , Xiamen 361024, China

Funding

Natural Science Foundation of Fujian Province · Youth Innovation Foundation of Xiamen City · The Science and Technology Innovation Program for Graduate Student of Xiamen University of Technology · Scientific Research Climbing Project of Xiamen University of Technology

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