室温偏差可选择,双频带红外探测器基于硫化物合体量子点和黑色
Shifan Wang1, Arun Ashokan2, Sivacarendran Balendhran3,4
1Department of Electrical and Electronic Engineering, University of Melbourne, Melbourne, Victoria 3010, Australia.
ACS nano
|June 15, 2023
概括
研究人员使用低维材料开发了一种室温,双频红外光探测器. 这种新型设备可以在中波和短波红外频段之间切换,在没有复杂的冷却系统的情况下提供高检测能力.
科学领域:
- 光电学是指光电子产品.
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
背景情况:
- 双带红外 (IR) 检测对于遥感和化学识别等应用至关重要.
- 现有技术通常依赖于昂贵,复杂的散装材料 (III-V,II-VI),可能需要主动冷却,限制广泛使用.
- 低维材料为具有成本效益,高性能光电子设备提供了潜力.
研究的目的:
- 为了展示一个在室温下运行的新型偏差可选择的双频红外探测器.
- 为了利用硫化物合体量子点和黑纳米片用于IR检测.
- 为了在中波和短波红外频段实现可调节的光谱光响应.
主要方法:
- 使用硫化合体量子点和黑色纳米片制造光电探测器.
- 在零和前进偏差条件之间应用偏差可选择的切换.
- 设备的光谱光响应和室温检测能力的表征.
主要成果:
- 探测器通过改变偏差条件,成功地将其峰值光敏范围切换到中波和短波红外波段之间.
- 实现室温检测能力为5 × 109厘米Hz1/2 W-1 (中波IR) 和1.6 × 1011厘米Hz1/2 W-1 (短波IR).
- 在光电二极管和光电晶体管之间切换的经过证明的操作模式,比传统设计提供了增强的功能.
结论:
- 这项研究呈现了迄今为止为低维材料双频红外探测器报告的最高室温探测率.
- 开发的设备提供了一种具有成本效益的室温解决方案,用于双频段红外探测.
- 独特的光二极管到光晶体管模式切换提供了传统探测器中无法获得的额外功能.
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