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InSb/InP核心外合体量子点用于敏感和快速短波红外光探测器
Lucheng Peng1, Yongjie Wang1, Yurong Ren1
1ICFO-Insitut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, Castelldefels, 08860 Barcelona, Spain.
ACS nano
|February 2, 2024
概括
我们开发了符合RoHS标准的抗氧化物 (InSb) 体量子点 (CQD) 用于短波红外 (SWIR) 光电子. 这些InSb CQD在光电探测器中实现了高性能,从而实现了先进的成像应用.
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:
- 体量子点 (CQD) 技术为短波红外 (SWIR) 光电子设备提供了一个低成本的平台.
- 具有高光电子性能的环保,符合RoHS标准的材料对于SWIR应用至关重要.
- 抗氧化物 (InSb) CQDs由于其RoHS合规性和可调节的带隙,对SWIR有希望,但设备性能受到限制.
研究的目的:
- 为可调整尺寸的具有SWIR发射的InSb CQD开发一种合成方法.
- 通过表面被动化和核心外工程来提高InSb CQD的光电子特性.
- 使用工程化InSb CQDs制造和描述高性能SWIR光探测器.
主要方法:
- 开发了一个可调整尺寸的InSb CQDs的合成路线,其激发峰值从900nm到1750nm.
- 设计了InSb/InP核心外结构,使表面缺陷被动化并增强光发光.
- 使用InSb/InP核心外CQD进行性能评估的制造光电极管设备.
主要成果:
- 在1240nm时实现了强大的InSb CQD SWIR光探测器,其外部量子效率 (EQE) 为25%.
- 展示了超过128dB的宽线性动态范围.
- 报告了70 ns的快速光响应时间和4.4 × 1011 jones的特定检测能力.
结论:
- 开发的InSb/InP核心外CQD适用于高性能SWIR光探测器应用.
- 这项工作克服了以InSb CQD为基础的光电子设备之前的局限性.
- 这些发现为低成本,高性能SWIR成像和传感技术铺平了道路.
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