Study of photoluminescence from defects in electron-irradiated beta-Ga2O3

IF 3.5 2区物理与天体物理 Q2 PHYSICS, APPLIED Applied Physics Letters Pub Date : 2024-09-26 DOI:10.1063/5.0215216

Yufei Zhang, Jing Li, Zunpeng Xiao, Gangyuan Jia, Kaiyue Wang, Zhenxing Qin, Junlin Li

引用次数: 0

Abstract

Research on the defects of β-Ga2O3 is the first step toward its application in high-end fields. However, there is still controversy over which defect structure is the origin of the 660–850 nm (near-infrared) photoluminescence (PL) band. The low-temperature PL spectrum was employed to study the PL properties of the 660–850 nm band. In addition, the intrinsic defects were artificially introduced into the (100) plane β-Ga2O3 crystal by electron irradiation, resulting in significant enhancement of the 660–850 nm band. Deconvolution fitting analysis combined with lattice relaxation theory indicated that the band was caused by both zero and single or multiple phonon transitions. According to the crystal structure and formation energy simulation, it was considered that the 660–850 nm PL band was related to oxygen vacancies at the three equivalent positions in the lattice.

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电子辐照 beta-Ga2O3 中缺陷的光致发光研究

对 β-Ga2O3 缺陷的研究是将其应用于高端领域的第一步。然而，对于哪种缺陷结构是 660-850 nm（近红外）光致发光（PL）波段的起源仍存在争议。为了研究 660-850 nm 波段的光致发光特性，我们采用了低温光致发光光谱。此外，通过电子辐照，人为地在 (100) 平面 β-Ga2O3 晶体中引入了本征缺陷，从而显著增强了 660-850 nm 波段。结合晶格弛豫理论进行的解卷积拟合分析表明，该波段既是由零声子跃迁引起的，也是由单声子或多声子跃迁引起的。根据晶体结构和形成能模拟，认为 660-850 nm 的 PL 带与晶格中三个等效位置的氧空位有关。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Applied Physics Letters 物理-物理：应用

CiteScore

6.40

自引率

10.00%

发文量

1821

审稿时长

1.6 months

期刊介绍： Applied Physics Letters (APL) features concise, up-to-date reports on significant new findings in applied physics. Emphasizing rapid dissemination of key data and new physical insights, APL offers prompt publication of new experimental and theoretical papers reporting applications of physics phenomena to all branches of science, engineering, and modern technology. In addition to regular articles, the journal also publishes invited Fast Track, Perspectives, and in-depth Editorials which report on cutting-edge areas in applied physics. APL Perspectives are forward-looking invited letters which highlight recent developments or discoveries. Emphasis is placed on very recent developments, potentially disruptive technologies, open questions and possible solutions. They also include a mini-roadmap detailing where the community should direct efforts in order for the phenomena to be viable for application and the challenges associated with meeting that performance threshold. Perspectives are characterized by personal viewpoints and opinions of recognized experts in the field. Fast Track articles are invited original research articles that report results that are particularly novel and important or provide a significant advancement in an emerging field. Because of the urgency and scientific importance of the work, the peer review process is accelerated. If, during the review process, it becomes apparent that the paper does not meet the Fast Track criterion, it is returned to a normal track.