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垂直屏障异构结构可用于可靠和高性能自动供电的红外探测

Fengtian Xia¹, Dongbo Wang¹, Jiamu Cao²

¹School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, Heilongjiang 150001, People's Republic of China.

ACS applied materials & interfaces

|August 21, 2024

概括

研究人员开发了一种新的PtSe2/GaAs异质连接,用于高性能红外 (IR) 探测器. 这种自动驱动的光电探测器克服了二维材料的局限性,提供了广泛的光谱灵敏度和用于先进的红外成像应用的潜力.

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:

新兴的二维 (2D) 材料为先进的红外 (IR) 探测器提供了潜力.
当前的2D红外光探测器面临着诸如界面重组,高接触电阻和较差导电性等挑战.
解决这些局限性对于2D红外光探测器的实际应用至关重要.

研究的目的:

为高性能红外探测引入一种新的垂直屏障异质连接.
为了研究PtSe2/GaAs异质连接的光电子特性和自动驱动能力.
探索这种异构结构在广谱检测和先进的红外成像方面的潜力.

主要方法:

使用湿转移方法制造PtSe2/GaAs异质连接.
整形行为和光伏效应的表征.
测量光响应参数,包括响应能力,检测能力和量子效率.

主要成果:

PtSe2/GaAs异质连接表现出显著的整形和光伏效应,使光电探测器能够自动操作.
在850nm获得了优异的光响应参数:响应度 (67.2 mA W-1),检测能力 (6.7 × 1012 Jones) 和EQE (9.8%).
在广泛的光谱带 (360-1550 nm) 和快速响应时间 (164 μs上升,198 μs下降) 中表现出高灵敏度.

结论:

该PtSe2/GaAs垂直屏障异质连接有效地克服了传统的2DIR光检测器的性能限制.
异构结构显示出对高性能,自动供电的红外探测,包括偏光探测有很大的希望.
潜在的应用包括室温,高分辨率红外成像和先进的传感技术.

关键词:

宽带检测宽带检测宽带检测摄影探测器的光检测器自动供电自动供电自动供电过渡金属二甲基二甲基化物垂直屏障是异构结构中的一个.

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