通过CsPbBr3纳米晶体/Y6异质连接检测可见到近红外II光
Yue Han1, Guohui Li1,2, Ting Ji1
1College of Electronic Information and Optical Engineering, Key Lab of Interface Science and Engineering in Advanced Materials of Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, China.
ACS applied materials & interfaces
|May 1, 2024
概括
我们使用CsPbBr3矿纳米晶和Y6.6开发了一种高性能宽带光学探测器. 该设备检测可见光和近红外光,为先进的光电探测器应用提供卓越的性能.
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.
- 纳米技术纳米技术
背景情况:
- 全无机矿由于其优良的光电特性,对光探测器有很大的希望.
- 大多数全无机矿由于其电子结构而缺乏对近红外 (NIR) 光的敏感性.
- 在可见光谱和NIR光谱中开发灵敏的宽带光学探测器仍然是一个挑战.
研究的目的:
- 使用CsPbBr3矿纳米晶体 (NCs) 和Y6.6制造一个高性能宽带光电探测器 (PD).
- 通过促进电荷转移和扩大光谱吸收来提高光检测性能.
- 为了实现卓越的性能指标,包括高相对暗电流比率和低检测极限.
主要方法:
- 制造一个由CsPbBr3矿NC和Y6.6组成的平面异质连接装置.
- 在可见光和NIR照明下对设备的光电特性进行表征.
- 对电荷转移动态和光谱吸收范围的分析.
主要成果:
- 在CsPbBr3 NCs/Y6异质连接的PD显示,光与暗电流比>10^5和在505nm照明下149.5dB的动态范围.
- 该设备的低检测极限为1.6nW/cm^2在505nm和1.3μW/cm^2在850nm.
- 由于Y6层中电子孔对生成,在波长>565nm,包括NIR区域高达1120nm的波长上实现了光检测.
结论:
- CsPbBr3 NCs/Y6异质连接是一种创新的方法,用于创建高性能宽带光学探测器.
- Y6组件增强可见光性能,并将灵敏度扩展到NIR区域.
- 这项工作为开发基于矿的先进光探测器材料提供了新的策略.
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