波导集成 Telluride 中红外光探测器,具有高响应性和高速
Lingxiao Ma1, Shuo Lin2, Hui Ma2
1Faculty of Electrical Engineering and Computer Science, Ningbo University, Ningbo 315211, China.
ACS nano
|August 1, 2024
概括
我们开发了一种新的中红外光探测器,使用与波导相集成的 Telluride (PtTe2). 用石墨烯增强它显著提高了检测性能,对红外传感应用有很大的前景.
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
- 凝聚物质物理学 凝聚物质物理学
背景情况:
- 中红外光检测对于各种民用和军事应用至关重要,特别是分析分子振动光谱.
- 二维拓半金属具有独特的电子特性,例如范德瓦尔斯 (vdW) 堆叠和无间隙结构,这使得它们对中红外探测具有前景.
- 基于半金属的II型迪拉克光探测器对于中红外应用仍然相对缺乏研究.
研究的目的:
- 介绍一个集成波导的中红外光探测器,使用二型迪拉克半金属 Telluride (PtTe2).
- 通过采用PtTe2-石墨烯异构结构来提高光探测器的性能.
主要方法:
- 波导体的制造与基于PtTe2的光探测器集成.
- 将石墨烯层与PtTe2光探测器集成,形成异构结构.
- 在不同偏差电压和光学功率下,在2004nm波长下,光检测器性能,包括响应率和3dB带宽的表征.
主要成果:
- PtTe2光探测器实现了2.7 A/W的响应率和0.6 MHz的3dB带宽.
- PtTe2-石墨烯异构光探测器表现出显著改善的性能,响应率为5.5A/W,带宽为35MHz,带宽为3dB.
- 在特定光学功率下,异构装置的外部量子效率达到了119%.
结论:
- 在中红外光探测器应用中,PtTe2的波导集成是可行的.
- PtTe2-石墨烯异构为中红外探测提供了显著的性能提升.
- 这项工作为先进的高性能中红外传感技术铺平了道路.
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