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Proceedings Paper

Room-temperature broadband terahertz detector based on three-dimensional graphene
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Paper Abstract

Terahertz (THz) waves are electromagnetic waves with frequencies between 0.1 THz and 10THz. With the rapid development of wireless communication, the existing spectrum resources have become increasingly scarce. Developing the new frequency band of wireless communication has gradually become a consensus to solve this contradiction. There are a lot of unexploited resources in THz frequency range, making terahertz play a decisive role in the future development of wireless communication. Three-dimensional (3D) graphene with connection carbon nanomaterials is expected to possess better optical and electrical properties than single-layer graphene. In this paper, we studied a room temperature ultra-broadband photodetector based on 3D graphene and investigated the different photoresponse at 0.22, 2.52, 30 THz. Obvious photocurrents and ultra-broadband absorption from infrared spectrum to terahertz (THz) region can be measure in the three 3D graphene. A high photoresponsivity of 15.3 mA W-1 and a fast time response of 20 ms have been achieved at 2.52 THz. The results reveal 3D graphene a good candidate for room-temperature broadband Terahertz detector.

Paper Details

Date Published: 2 March 2020
PDF: 11 pages
Proc. SPIE 11279, Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XIII, 1127914 (2 March 2020); doi: 10.1117/12.2545792
Show Author Affiliations
Yifan Li, Tianjin Univ. (China)
Yating Zhang, Tianjin Univ. (China)
Zhiliang Chen, Tianjin Univ. (China)
Tengteng Li, Tianjin Univ. (China)
Qingyan Li, Tianjin Univ. (China)
Hongliang Zhao, Tianjin Univ. (China)
Jie Li, Tianjin Univ. (China)
Yu Yu, Tianjin Univ. (China)
Lufan Jin, Tianjin Univ. (China)
Jianquan Yao, Tianjin Univ. (China)

Published in SPIE Proceedings Vol. 11279:
Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XIII
Laurence P. Sadwick; Tianxin Yang, Editor(s)

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