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极化敏感的自动供电的肖特基光电探测器,具有由几何不对称接触诱导的高光伏性能

Chaoyang Liu¹, Tao Zheng¹, Kaixiang Shu²

¹Guangdong Provincial Key Laboratory of Chip and Integration Technology, School of Semiconductor Science and Technology, Faculty of Engineering, South China Normal University, 528225 Foshan, P. R. China.

ACS applied materials & interfaces

|March 6, 2024

概括

研究人员使用低对称的2D ReSe2和不对称的接触器开发了新的偏振敏感光学探测器. 这些自动供电设备实现了高性能和出色的极化灵敏度,为先进的光学应用铺平了道路.

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:

对偏振敏感的光电探测器对于导航,光学切换和通信至关重要.
开发具有低功耗,高性能和出色的极化灵敏度的设备仍然是一个挑战.

研究的目的:

构建简单有效的低对称的二维 (2D) ReSe2 Schottky光探测器,具有几何不对称的接触.
在自动供电模式下调查它们的光电性能和极化灵敏度.

主要方法:

制造具有几何不对称接触的2D ReSe2 Schottky光探测器.
光电性能的表征,包括响应能力,特定检测能力和光开/关比.
扫描光电流映射 (SPCM) 来分析光电流生成机制.
在不同的波长和零偏差下测量极化比率 (PRs).

主要成果:

在635nm时实现了出色的响应能力 (379mA/W),特异性检测能力 (6.8×10^11Jones),以及光开/关比 (>10^5).
在自动供电模式下展示了令人印象深刻的极化比率 (3.1在635nm,3.6在808nm).
SPCM证实了较小的接触面积在光电流生成中具有较高的Schottky屏障的主导作用.

结论:

在ReSe2 Schottky光探测器中的几何不对称接触有效地提高了极化灵敏度和光电性能.
开发的设备显示了高性能,自动供电,极化敏感光检测的巨大潜力.
这项工作为设计先进的光探测器技术提供了一个有前途的策略.

关键词:

这是ReSe2Se2的意思.斯科特基的光电探测器不对称的几何形状联系方式联系方式极化敏感的检测检测器自动供电自动供电自动供电

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