激光损伤 β-Ga2O3 的光致发光绘图

IF 1.8 4区 材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY
Jesse Huso, Matthew D. McCluskey, John S. McCloy, Arkka Bhattacharyya, Sriram Krishnamoorthy, Clint D. Frye, Joel B. Varley, Lars F. Voss
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引用次数: 0

摘要

利用光致发光(PL)绘图研究了 1064 nm 激光脉冲对 β-Ga2O3 外延层造成的破坏。确定了本征紫外波段的强度和位置,并绘制成假彩色图像。确定了两种类型的损伤:圆形损伤和损伤裂缝。圆形损伤显示出比周围材料更低的紫外可见光强度,颜色中心在损伤区域周围形成 "光晕"。损伤裂纹与 a 轴和 c 轴对齐,显示出比未损坏材料更高的紫外可见光强度。紫外波段能量的变化揭示了未加工材料中的缺陷。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Photoluminescence mapping of laser-damaged β-Ga2O3

Photoluminescence mapping of laser-damaged β-Ga2O3

Photoluminescence (PL) mapping was utilized to investigate damage in β-Ga2O3 epilayers induced by 1064 nm laser pulses. The intensity and position of the intrinsic UV band were determined and plotted as a false-color image. Two types of damage were identified: circular damage and damage cracks. Circular damage shows lower UV PL intensity than the surrounding material with color centers in a “halo” around the damaged region. Damage cracks are aligned with the a and c axes and show higher PL intensity than undamaged material. Defects in the as-grown material were revealed by shifts in the UV band energy.

Graphical abstract

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来源期刊
MRS Communications
MRS Communications MATERIALS SCIENCE, MULTIDISCIPLINARY-
CiteScore
2.60
自引率
10.50%
发文量
166
审稿时长
>12 weeks
期刊介绍: MRS Communications is a full-color, high-impact journal focused on rapid publication of completed research with broad appeal to the materials community. MRS Communications offers a rapid but rigorous peer-review process and time to publication. Leveraging its access to the far-reaching technical expertise of MRS members and leading materials researchers from around the world, the journal boasts an experienced and highly respected board of principal editors and reviewers.
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