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高灵敏且可光谱调节的紫外线光探测器通过浮式门晶体管中的接口屏障工程

Bangchi Huang^1,2, Xiang Li^1,2, Jianlin Shi^1,2

¹State Key Laboratory of Photovoltaic Science and Technology, Shanghai Frontiers Science Research Base of Intelligent Optoelectronic and Perception, Institute of Optoelectronics and Department of Materials Science, Fudan University, Shanghai 200433, China. huangh@fudan.edu.cn.

|September 29, 2025

概括

本研究介绍了一种新型的紫外线 (UV) 光探测器,使用浮门场效应晶体管 (FGFET) 实现高灵敏度和可调光谱选择性,克服传统宽带间隙半导体的局限性.

科学领域:

材料科学材料科学材料科学
纳米技术纳米技术
光电学是指光电子产品.

背景情况:

高性能紫外线 (UV) 光探测器需要高响应性,检测性和光谱选择性来过可见光.
宽带间隙半导体很常见,但在材料生长和可扩展性兴奋剂方面面临挑战.
现有的技术难以有效地整合紫外线检测能力.

研究的目的:

开发一种具有高灵敏度和可调节的光谱响应的紫外线光探测器,使用一种新的二维浮动门场效应晶体管 (FGFET) 结构.
为了克服传统的基于半导体的紫外线探测器的局限性.
展示一个可扩展和可集成的紫外线检测平台.

主要方法:

在Si/SiO2基板上使用Au/hBN/MoS2制造一个二维浮门场效应晶体管 (FGFET) 装置.
研究光检测机制,包括紫外线诱导的电子激发,界面屏障道化和通道导电量的调制.
通过选择具有不同工作功能的浮式门金属 (Cr,Al,Pd) 来调整光谱响应.

主要成果:

为Au/hBN/MoS2 FGFET实现了5.6 × 10^4 A W^-1的超高响应度,在254nm时,与360nm的切断波长为Au/hBN/MoS2 FGFET.
通过调整浮动门金属来证明可调节的光谱选择性,将切断波长从440nm转移到330nm.
证实光检测机制依赖于界面屏障高度和紫外线诱导的电子激发.

结论:

开发的基于FGFET的紫外线光探测器提供了卓越的灵敏度和可调节的光谱选择性.
该平台显示了UV成像,弧度放电监测和自适应光电子系统中先进应用的巨大潜力.
这项工作为下一代紫外线检测技术提供了有希望的方法.

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