基于宽带间隙的红外光电探测器,通过高效的两光子吸收来实现两维过渡金属二二甲基化物
Tong Chen1, Zhaoqiang Zheng1, Kunle Li1
1Guangdong Provincial Key Laboratory of Information Photonics Technology, Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter, School of Material and Energy, Guangdong University of Technology, Guangzhou 510006, People's Republic of China.
Nanotechnology
|July 29, 2024
概括
本研究设计了使用二化 (ReSe2) 和二硫化 (MoS2) 进行红外探测的两光子吸收 (TPA) 光探测器. 这些设备显示出有希望的响应性,克服了当前TPA材料的局限性.
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:
- 二维 (2D) 过渡金属二甲基化物 (TMD) 对光电探测器具有出色的光电子性能.
- 在一些二维TMD中,有限的带隙阻碍了红外光检测.
- 两光子吸收 (TPA) 可以延长光响应,但往往是低效的.
研究的目的:
- 设计和研究使用高TPA系数2DTMD (ReSe2和MoS2) 的光电探测器.
- 利用TPA扩展光响应到1550 nm的近红外区域.
- 为了克服TPA在红外光检测应用中的低效率.
主要方法:
- 基于ReSe2和MoS2的光电探测器的制造.
- 描述光探测器性能,专注于响应能力.
- 对1550 nm的近红外光的TPA效率的评估.
主要成果:
- ReSe2光探测器的响应率为43μA W-1,超过现有的单材料TPA光探测器.
- 莫斯2光探测器的响应率为18μA W-1,相当于最先进的TPA设备.
- 证明了使用高TPA系数2DTMD用于1550nm光检测的可行性.
结论:
- 具有高TPA系数的2DTMD,特别是ReSe2和MoS2,可用于红外光检测.
- 开发的光探测器显示了将光响应扩展到近红外光谱的巨大潜力.
- 这项研究为基于二维材料的先进红外传感技术铺平了道路.
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