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超高光响应性和检测能力在2D石硫化物光探测器中用于Vis-NIR辐射

Vinod Panwar¹, Manoj Dey², Pragya Sharma¹

¹Department of Instrumentation and Applied Physics, Indian Institute of Science, Bangalore, Karnataka, 560012, India.

Small (Weinheim an der Bergstrasse, Germany)

|March 26, 2024

概括

硫化物 (Bi2S3) 2D材料在光探测器应用中表现出显著的温度依赖的传输特性. 这种新型材料实现了超高的响应性和检测能力,性能优于现有的二维光探测器.

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
纳米技术纳米技术

背景情况:

硫化物 (Bi2S3) 是一种具有直接能量带隙和广泛光学吸收的二维材料.
2D材料越来越多地被用于先进的电子和光电子设备.

研究的目的:

为了研究2D Bi2S3在场效应晶体管 (FET) 光探测器中的温度依赖的传输特性.
探索2D Bi2S3作为高性能光探测器材料的潜力.

主要方法:

一个2D Bi2S3 FET光探测器的制造.
取决于温度的电阻测量.
光发光,时间分辨光发光,霍尔测量和能量分散式X射线光谱学.
密度函数理论 (DFT) 计算用于缺陷分析.

主要成果:

观察到电阻在10K下降了99.26%,而在300K下降了99.26%,这归因于诸如斯木和硫空缺等缺陷.
实现了超高的响应能力 (≈10^6 A/W) 和检测能力 (≈10^14 Jones).
在广泛的光谱 (532-1064 nm) 中,测量的外部量子效率为≈10^7%,具有低噪声等效功率.

结论:

2D Bi2S3表现出异常的温度依赖的传输特性,这对光检测器性能至关重要.
缺陷显著影响材料的特性,使其具有特殊的光电子行为.
Bi2S3 FET光探测器表现出卓越的性能,超过其他2D光探测器.

关键词:

这是一个二维光探测器.石硫化物是一种密度函数理论密度函数理论场效应晶体管电晶体管.摄影光的发光效应宽带光电探测器宽带光电探测器

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