TCAD Design of Deep-Ultraviolet LED Based on ZnO/AlGaN Multiple Quantum Wells with Tunable Wavelength

IF 0.9 4区 物理与天体物理 Q4 PHYSICS, CONDENSED MATTER
Jie Chen, Chenxing Jiang, Yifan Yang, Zhendong Ge, Yaqi Han, Tianyou Zhang, Feng Chen, Ying Yang, Zhiyuan Yao, Jiwei Hou, Dawei Gu, Lei Wang
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引用次数: 0

Abstract

Multiple quantum-wells light-emitting diodes (MQWs-LEDs) are high-performance electroluminescent light sources, which is widely used in solid state lighting, medical, industrial and other fields. Understanding the light emission origin and mechanisms of MQWs-LEDs is crucial for their practical applications. Here, we show the excellent ultraviolet (UV) and deep-ultraviolet (DUV) emissions from ZnO/AlGaN MQWs-LEDs using Technology Computer Aided Design (TCAD) simulation, which deviates from the typical ZnO heterojunction LEDs. The adjustment of the structural parameters of the MQWs was performed to control the emission wavelength in the range of 335366 nm. After parameter optimization, 342.6348.7 nm DUV EL from ZnO/AlGaN MQWs is obtained successfully. The deconvolution analysis of the EL spectra was conducted to investigate the origin of the emissions. The results indicate that the structural parameter operation-induced emission blue-shift results from the quantum confinement effect. This work provides new references for designing ZnO-based MQWs and preparing new DUV LEDs.

Abstract Image

Abstract Image

基于 ZnO/AlGaN 多量子阱的可调谐波长深紫外 LED 的 TCAD 设计
摘要 多量子阱发光二极管(MQWs-LEDs)是一种高性能电致发光光源,广泛应用于固态照明、医疗、工业等领域。了解 MQWs-LED 的发光源和发光机制对其实际应用至关重要。在这里,我们利用技术计算机辅助设计(TCAD)模拟展示了 ZnO/AlGaN MQWs-LEDs 的优异紫外线(UV)和深紫外线(DUV)发射,这与典型的 ZnO 异质结 LED 有所不同。对 MQW 的结构参数进行了调整,以控制 335-366 nm 范围内的发射波长。参数优化后,ZnO/AlGaN MQW 成功获得了 342.6-348.7 nm 的 DUV EL。对电致发光光谱进行了解卷积分析,以研究发射的起源。结果表明,结构参数操作引起的发射蓝移是量子约束效应的结果。这项工作为设计基于氧化锌的 MQW 和制备新型 DUV LED 提供了新的参考。
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来源期刊
Physics of the Solid State
Physics of the Solid State 物理-物理:凝聚态物理
CiteScore
1.70
自引率
0.00%
发文量
60
审稿时长
2-4 weeks
期刊介绍: Presents the latest results from Russia’s leading researchers in condensed matter physics at the Russian Academy of Sciences and other prestigious institutions. Covers all areas of solid state physics including solid state optics, solid state acoustics, electronic and vibrational spectra, phase transitions, ferroelectricity, magnetism, and superconductivity. Also presents review papers on the most important problems in solid state physics.
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