自动供电的宽带UV-NIR极化敏感光学探测器 基于单极的范德瓦尔斯异极结构
Wei Gan1, Li Ming1, Chentao Zhang1
1Institute of Physical Science and Information Technology and Information Materials and Intelligent Sensing Laboratory of Anhui Province, Anhui University, Hefei 230601, China.
ACS applied materials & interfaces
|May 20, 2025
概括
我们开发了一个使用2D MoS2/Ta2NiSe5范德瓦尔斯异构结构 (vdWH) 的自动供电光探测器. 该设备提供高效率,超快速响应和宽带,极化敏感检测,无需外部电源.
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
- 光电学是指光电子产品.
背景情况:
- 二维 (2D) 材料和范德瓦尔斯异构结构 (vdWH) 对先进的光探测器来说是有前途的.
- 开发具有高性能和自动供电能力的多功能光电探测器是一个关键的研究领域.
研究的目的:
- 为了展示一个自动供电,宽带和偏振敏感的光电探测器.
- 为了研究基于2D MoS2/Ta2NiSe5 vdWH的光电探测器的性能.
主要方法:
- 一个2D MoS2/Ta2NiSe5 vdWH.的制造
- 在各种条件下 (例如638nm激光照明) 描述光探测器的光响应.
- 评估光伏效应,响应性,检测性,外部量子效率,响应时间和极化比.
主要成果:
- 这台MoS/Ta/NiSe/vdWH光探测器实现了高响应率 (1382 A/W),检测能力 (6.59 × 10 13 cm Hz 1/2 W -1),以及EQE (2.7 × 10 5 %).
- 观察到~3μs的超快响应时间和突出的自动供电光伏效应 (Voc=0.28V,Isc=27.4nA).
- 该设备表现出宽带光响应 (UV-NIR) 和极化比 (PR) 高达2.89.
结论:
- 2D MoS2/Ta2NiSe5 vdWH光电探测器表现出卓越的性能,包括自动供电操作,宽带检测和极化灵敏度.
- 在n-n结处的单边耗尽区域对于设备的高效率和独特特性至关重要.
- 这项工作突显了单极vdWH在下一代多功能光电探测器中的潜力.
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