Tunable infrared photodetector based on graphene plasmons controlled by ferroelectric domains

Junxiong Guo; Shangdong Li; Yizhen Ke; Linna Mao; Wen Huang; Xiaosheng Zhang

doi:10.1117/12.2544774

20 December 2019 Tunable infrared photodetector based on graphene plasmons controlled by ferroelectric domains

Junxiong Guo, Shangdong Li, Yizhen Ke, Linna Mao, Wen Huang, Xiaosheng Zhang

Proceedings Volume 11209, Eleventh International Conference on Information Optics and Photonics (CIOP 2019); 112091F (2019) https://doi.org/10.1117/12.2544774
Event: Eleventh International Conference on Information Optics and Photonics (CIOP 2019), 2019, Xi'an, China

Abstract

A tunable infrared photodetector based on graphene surface plasmon polaritons (SPP) controlled by the ferroelectric domains was demonstrated in this work. We designed the ferroelectric layer to build periodically ferroelectric domains, producing a non-volatile electric field for the convenience of tuning graphene SPP to resonate with the incident wavelengths. This novel strategy facilitates the improvement of absorption of incident photons without additional biasing or patterning graphene, compared with the reported graphene plasmonic photodetectors. In our proposed photodetector, the graphene carriers could be readily tuned by varying ferroelectric microstructure, yielding a tunable absorption peak in the range from 6 μm to 20 μm and significantly enhanced photo-responsivity.

Citation Download Citation

Junxiong Guo, Shangdong Li, Yizhen Ke, Linna Mao, Wen Huang, and Xiaosheng Zhang "Tunable infrared photodetector based on graphene plasmons controlled by ferroelectric domains", Proc. SPIE 11209, Eleventh International Conference on Information Optics and Photonics (CIOP 2019), 112091F (20 December 2019); https://doi.org/10.1117/12.2544774

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