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基于2D Te/WS₂异构结构的高尖屏障光二极管

Huihui Yu^1,2, Yunan Wang¹, Haoran Zeng¹

¹Academy for Advanced Interdisciplinary Science and Technology, Key Laboratory of Advanced Materials and Devices for Post-Moore Chips Ministry of Education, State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, P. R. China.

|June 20, 2024

概括

研究人员开发了一种新的Te/WS2范德瓦尔斯异质连接光二极管. 该设备实现了超低的暗电流和超快的光响应,克服了二维材料光伏的先前局限性.

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) 范德瓦尔斯 (vdWs) 异面连接对低功耗,快速光二极管是有前途的,因为光滑的接口和快速的电荷转移.
现有的2D vdWs光二极管在实现超低暗电流和超快光响应方面面临挑战,因为高度内置的电场增加了暗电流.
优化光伏设备需要平衡光载体运输速度与减少的暗电流.

研究的目的:

提出和演示一种高峰屏障光二极管,用于超低暗电流和超快响应.
为了研究Te/WS2异质连接的独特带对齐特性.
为基于二维材料的高性能光伏提供设计策略.

主要方法:

使用Te/WS2异质连接制造光二极管.
带对齐的特征从II型转换为I型.
测量暗电流和光响应时间.
使用制造的光二极管进行可见光成像仪的演示.

主要成果:

Te/WS2异质连接处呈现出高电子屏障和内置电场的大孔.
该装置实现了8 × 10^-14 A的超低暗电流.
记录了10/13微秒的超快光响应.
一个100×40像素可见光成像器成功演示.

结论:

高尖屏障设计有效地减少了少数载波和热载波生成电流,同时保持了快速的光载波传输.
Te/WS2 vdWs光二极管表现出卓越的性能指标,包括超低暗电流和超快响应.
这项工作为设计高性能2D基于材料的光伏设备提供了宝贵的见解.

关键词:

这是一个二维光探测器.在这里,我们可以看到 Te Te Te Te.黑暗的电流黑暗的电流黑暗的电流图像传感器图像传感器图像传感器在PNN交叉口交叉口.一种类型-I带对齐.范德瓦尔斯异构结构的异构结构

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