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基于Ni/β-Ga2O3垂直肖特基屏障二极管的高性能太阳盲紫外光探测器
Cizhe Fang1,2, Tongzhou Li1,2, Yao Shao3
1Hangzhou Institute of Technology, Xidian University, Hangzhou 311200, China.
Nano letters
|January 6, 2025
概括
氧化 (Ga2O3) 肖特基光二极管实现了创纪录的低暗电流和太阳盲紫外线检测的高性能. 这一突破使得强大,稳定,可大规模生产的紫外线成像设备成为可能.
科学领域:
- 材料科学 材料科学 材料科学
- 光电学是指光电子产品.
- 半导体物理 半导体物理
背景情况:
- 氧化 (Ga2O3) 是太阳盲紫外线 (SBUV) 光探测器的一个有前途的材料,由于其宽带间隙和快速的光响应.
- 在Ga2O3Schottky光二极管中的性能限制通常归因于Schottky接触质量,阻碍了最佳检测能力.
研究的目的:
- 为了开发一个具有超薄阳极的高性能Ni/β-Ga2O3垂直Schottky屏障二极管 (SBD).
- 通过简单的表面处理来提高Schottky连接质量,以提高光探测器性能.
主要方法:
- 使用超薄阳极电极制造一个Ni/β-Ga2O3垂直Schottky屏障二极管 (SBD).
- 实施简单的表面处理,以提高Schottky结的质量.
- 设备性能的表征,包括暗电流,光到暗电流比率 (PDCR),特定检测能力 (D*),响应时间和高温操作.
主要成果:
- 实现了创纪录的低暗电流,低于12 fA.
- 展示了4.92 × 10 7的超高光向暗电流比 (PDCR) 和2.76 × 10 15的特异检测能力 (D*).
- 将响应时间缩短到毫秒级,并在150°C时确认稳定运行.
结论:
- 开发的Ni/β-Ga2O3 SBD具有超薄阳极和改进的Schottky结,为SBUV检测提供了卓越的性能.
- 简单的表面处理方法使高性能Ga2O3光探测器的批量生产更容易.
- 这些发现表明了先进的紫外线成像应用的巨大潜力.
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