题目：

Tailoring a Plasmonic Topological Architecture for a HyperspectralResolution Pyroelectric Detector


作者：

Ziming Wang1,2,4, Haichao Li1,2,4, Jiawei Zhou1,2, Junhao Li1,2,Jun Pang1,2, Jiacheng Yin1,2, Ruoqian Gao3,*, Xiaofeng Li1,2,*, andXiaoyi Liu1,2,*


单位：

1 School of Optoelectronic Science and Engineering & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215006, China

2 Key Lab of Advanced Optical Manufacturing Technologies of Jiangsu Province & Key Lab of Modern Optical Technologies of Education Ministry of China, Soochow University, Suzhou 215006, China

3 Suzhou Institute of Biomedical Engineering and Technology of the Chinese Academy of Sciences, Suzhou 215163, China

4 These authors contributed equally: Ziming Wang, Haichao Li


ABSTRACT：

    Near-infrared waveband, especially in 1100-1300 nm, has extremely high spectral information density, and attracts enormous interest in the areas of photodetection and spectroscopy. However, achieving hyperspectral resolution detection in this band has been a long-standing challenge owing to the restriction and interference of bandgaps in common semiconductor materials. Additionally, micrometer-scale thickness of the multi-film filter will also introduce extra complexity to the detection system. Herein we tailor a plasmonic topological architecture covering on a pyroelectric detector, which can excite a special type of surface lattice resonances and consequently generate excellent narrowband characteristics in the vicinity of 1100 nm. Merely relying on tens of nanometers of thickness of the topological layer, the full width at half maximum of detector response can be as low as 1 nm with a Q factor of 1168, far surpassing the level of ordinary plasmonic metasurfaces. Furthermore, the wavelength and width of its response peak can be continuously engineered by controlling the period and orientation angle of the architectures, while its response speed is also improved significantly with the assistance of plasmonic topological layer. Our work provides a concise and effective strategy to develop hyperspectral resolution photodetectors without inherent constraints of materials and wavebands.


影响因子：16.1

分区情况：一区

链接：//doi.org/10.1021/acsnano.5c22750