Plasmon–Microcavity Coupling and Fabry–Pèrot Lasing in a ZnO:Ga Microwire/p-Type Gallium Nitride Heterojunction,The Journal of Physical Chemistry C

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Plasmon–Microcavity Coupling and Fabry–Pèrot Lasing in a ZnO:Ga Microwire/p-Type Gallium Nitride Heterojunction
The Journal of Physical Chemistry C ( IF 3.3 ) Pub Date : 2023-03-21 , DOI: 10.1021/acs.jpcc.2c08846
Zhijie Zhou ₁ , Ye Tian ₁ , Yongbo Zhou ₁ , Shangfei Yao ₁ , Wenchao Lin ₁ , Wenhong Sun ₁ , Hao Huang ₁ , Lishuang Wang ₁ , Li Chen ₁ , Bingsuo Zou ₁

Affiliation

In recent years, electroluminescent devices of ZnO have been the focus of attention and research. In this paper, we fabricated a ZnO:Ga microwire/p-type gallium nitride heterojunction light-emitting diode and found a lasing emission near the silver electrode. We interpret this lasing as trap-state FP-mode lasing because a series of small peaks appear in the spectrum and the positions of three lasing peaks are close to the emission peak from the trap state. After sputtering gold on the surface of the ZnO:Ga microwire, the luminescence of the device was enhanced and anomalous spectral signals appeared at a reverse current of 20 mA. The luminescence enhancement is due to the hot electron transfer induced by plasmons, and the strange spectral phenomenon was attributed to the Fano resonance caused by plasmon–microcavity coupling. The above research can provide some guidance for the design of LEDs and laser devices.

中文翻译：

ZnO:Ga 微线/p 型氮化镓异质结中的等离子体-微腔耦合和法布里-珀罗激光

近年来，ZnO电致发光器件一直是人们关注和研究的热点。在本文中，我们制作了 ZnO:Ga 微线/p 型氮化镓异质结发光二极管，并在银电极附近发现了激光发射。我们将这种激光解释为陷阱态 FP 模式激光，因为光谱中出现了一系列小峰，并且三个激光峰的位置接近陷阱态的发射峰。在ZnO:Ga微丝表面溅射金后，器件发光增强，在20 mA反向电流下出现异常光谱信号。发光增强是由于等离子体激元引起的热电子转移，而奇怪的光谱现象归因于等离子体激元-微腔耦合引起的法诺共振。

更新日期：2023-03-21

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