超薄Bi2OSe/Si异质连接光探测器与道化氧化物被动化,用于增强光电子性能
Tzu-Pu Hung1, Wei-Han Chen1, Yi-Jyun Chen1
1Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu 300044, Taiwan.
ACS applied materials & interfaces
|April 23, 2025
概括
这项研究在光探测器上介绍了一种新型的超薄 bismuth oxide selenide (Bi2O2Se). 该设备为先进的光电子应用提供高性能和稳定性.
科学领域:
- 材料科学 材料科学 材料科学
- 凝聚物质物理学 凝聚物质物理学
- 纳米技术纳米技术
背景情况:
- 由于其独特的特性,二维 (2D) 材料对于下一代光电子非常重要.
- 开发稳定和高性能光电探测器对于先进的光子应用是必不可少的.
研究的目的:
- 为了引入一个高性能超薄的Bi2O2Se/Si异质连接光探测器.
- 为了研究道氧化物被动化对设备性能的影响.
- 评估Bi2O2Se层的空气稳定性和实际适用性.
主要方法:
- 使用无转移脉冲激光沉积制造超薄的Bi2O2Se/Si异质连接.
- 加入二氧化 (SiO2) 薄道层用于被动化.
- 光探测器性能的表征,包括暗电流,开/关比和响应能力.
主要成果:
- 该Bi2O2Se层表现出极好的空气稳定性.
- 异质连接光探测器实现了低暗电流~22.3 nA/cm2.
- 记录了高的8×106的开/关比和23.0A/W的响应能力.
- 与传统的CdS/Si光探测器相比,该设备表现出更高的性能,包括更快的响应和更高的稳定性.
结论:
- 开发的Bi2O2Se/Si异构光探测器显示了先进光电子设备的巨大潜力.
- 道氧化物被动化的整合提高了设备性能指标.
- 这些发现凸显了Bi2O2Se对于实用,高性能光子应用的适用性.
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