通过载体阻断层工程,增强自动供电的Bi2Te3基于垂直异构接宽带光探测器的光响应
Wei Wu1, Wen He1, Duoduo Ling1
1School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, 150001, China.
Small (Weinheim an der Bergstrasse, Germany)
|May 26, 2025
概括
研究人员开发了一种使用Bi2Te3/Sb2O3/p-Si异质连接的新型自动供电宽带光探测器 (SPBD). 这种设计通过采用Sb2O3载体阻断层来提高光学应用中的性能来增强光响应.
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.
- 半导体设备 半导体设备
背景情况:
- 自动供电的宽带光探测器 (SPBD) 对于光通信,遥感和成像至关重要.
- 垂直异质连接提供了高效的载体分离,但可能会遭受重组损失.
- 优化频段对齐是提高SPBD性能的关键.
研究的目的:
- 通过设计垂直异构连接接口来开发一个改进的SPBD.
- 为了研究载体阻断层对光探测器性能的影响.
- 为了在广泛的光谱范围内实现增强的自动供电光响应.
主要方法:
- 使用单步电子束蒸发制造Bi2Te3/Sb2O3/p-Si垂直异质连接的制造.
- 描述光探测器的性能,包括响应能力,检测能力和响应时间.
- 评估该设备在UV-VIS-NIR区域的成像能力.
主要成果:
- 该Bi2Te3/Sb2O3/p-Si SPBD显示了从UV到NIR (254-1050 nm) 的广泛光谱响应.
- 该Sb2O3阻断层有效地减少了载体重组,增强了光响应.
- 实现了高响应度 (316.5 mA·W-1),检测能力 (6.19 × 1011 斯) 和快速响应时间 (24.6/25.1 ms).
- 该设备显示出各种光模式的优秀成像能力.
结论:
- 开发的基于Bi2Te3的垂直异构SPBD提供了优越的性能,与没有阻断层的设备相比.
- 引入金属氧化物 (Sb2O3) 作为载体阻断层是提高SPBD性能的有效策略.
- 这项工作提出了一种通过载体阻断层工程来提高SPBD性能的新方法.
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