炭化物元表面使得超宽带探测器从可见到中红外可行
Shutao Zhang1,2,3, Shu An1, Mingjin Dai4
1Institute of Materials Research and Engineering (IMRE), Agency for Science, Technology and Research (A*STAR), 2 Fusionopolis Way, Innovis #08-03, Singapore, 138634, Republic of Singapore.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|February 19, 2025
概括
基化物超表面可实现约97%的吸收,用于从可见到中红外的超宽带光检测. 这使得便携式,偏振选择性热电光探测器可以在没有冷冷却的情况下使用.
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:
- 热电材料通过支持跨多个光谱范围的光学共振提供了超宽带光检测的潜力.
- 甲基 (Sb2Te3) 在可见光谱和中红外光谱中分别呈现带间等离子体和Mie共振,具有高的Seebeck系数 (178μV K-1).
- 使用单一材料平台的微型,波长敏感的超宽带探测器的炭化物超表面仍未得到充分探索.
研究的目的:
- 设计和制造用于超宽带光检测的甲基化物 (Sb2Te3) 超表面设备.
- 为了证明单一材料素化物超表面的可行性,用于小型化和波长敏感的探测器.
- 探索极化选择性热电光探测器的潜力.
主要方法:
- 设计和制造反化 (Sb2Te3) 的地表设备.
- 在可见到中红外光谱的共振吸收的特征.
- 将元表面集成到热电光探测器设备中.
- 展示线性极化灵敏度. 在线极化灵敏度的证明.
主要成果:
- 在超宽带频谱 (可见到中红外) 中,在Sb2Te3超表面设备中实现了≈97%的共振吸收.
- 展示了具有超宽带操作的热电光探测器.
- 通过使用Sb2Te3超表面成功实现了线性偏振选择性检测.
- 展示了与光学共振相结合的高Seebeck系数 (178μV K-1) 的潜力.
结论:
- Sb2Te3超表面为高共振吸收的超宽带光检测提供了一个可行的平台.
- 开发的设备使得便携式,极化敏感的热电光探测器可以在没有冷冷却的情况下使用.
- 这项研究为环境传感应用的紧型超宽带光谱仪铺平了道路.
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