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Frontiers of Optoelectronics logoLink to Frontiers of Optoelectronics
. 2019 Dec 5;14(4):445–449. doi: 10.1007/s12200-019-0957-7

Interface phonon polariton coupling to enhance graphene absorption

Zhenyao Chen 1, Junjie Mei 1, Ye Zhang 1, Jishu Tan 1, Qing Xiong 1, Changhong Chen 1,✉
PMCID: PMC9743906  PMID: 36637752

Abstract

Here we present a graphene photodetector of which the graphene and structural system infrared absorptions are enhanced by interface phonon polariton (IPhP) coupling. IPhPs are supported at the SiC/AlN interface of device structure and used to excite interband transitions of the intrinsic graphene under gated-field tuning. The simulation results show that at normal incidence the absorbance of graphene or system reaches up to 43% or closes to unity in a mid-infrared frequency range. In addition, we found the peak-absorption frequency is mainly decided by the AlN thickness, and it has a red-shift as the thickness decreases. This structure has great application potential in graphene infrared detection technology.

Keywords: interface phonon polariton (IPhP), infrared absorption enhancement, graphene photodetector

Acknowledgements

This work was funded by the National Natural Science Foundation of China (NSFC) (Grant No. 61675080) and Fundamental Research Funds for the Central Universities (HUST: 2016YXMS021).

Footnotes

Zhenyao Chen received the B.S. degree in Photoelectric Information Science and Engineering from Southeast University of China in 2017. Now, he is a master student at the Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, China. His research interests are mainly in graphene, infrared detector and phonon polariton.

Junjie Mei received the B.S. degree in Electronic Science and Technology from Xi’an Jiaotong University of China in 2015. Now, he is a Ph.D. student at the Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, China. His research interests are mainly in graphene, infrared detector and phonon polariton.

Ye Zhang received the B.S. degree in Optical Information Science and Technology from the School of Information Engineering at Jiangxi University of Science and Technology of China in 2016. He is currently a Ph.D. student in Optical Engineering at the Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, China. His research focuses on nano-photonics and infrared photodetectors.

Jishu Tan received the B.S. degree from Chongqing University of Posts and Telecommunications in 2018. She is currently a master student at the Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, China. Her research interest is mainly in constructing magnetic-phonon interaction metasurface.

Qing Xiong received the B.S. degree in Optical Information Science and Technology from the Department of Applied Physics at Northwestern Polytechnical University of China in 2018. He is currently working toward the M.S. degree in Optical Engineering in Huazhong University of Science and Technology, China. His research work focuses on the absorber based on metasurface.

Changhong Chen received his B.S. degree from Wuhan University of Technology in 1990, M.S. degree from Southeast University in 1996, and Ph.D. degree from Huazhong University of Science and Technology in 2001. Now, he is working as a professor in the Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, China. His research interests are focused on surface plasmon and surface phonon polaritons, electromagnetic radiation energy harvesting antenna technology, and advanced infrared materials and integrated devices.

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