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Issue 26, 2020
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A broadband all-fiber integrated graphene photodetector with CNT-enhanced responsivity

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Abstract

Carbon-based nanomaterials such as carbon nanotubes (CNTs) and graphene have great potential for high-performance all-carbon photodetectors due to their unique optical and electronic properties. Here, we assemble a hybrid CNT/graphene film prepared by depositing CNTs on a single layer graphene with a side-polished optical fiber to achieve a novel all-fiber integrated photodetector. Because CNTs strongly enhanced the interaction between graphene and the fiber mode, the photodetector shows an extra-high photoresponsivity over the visible and infrared region. Especially at 1550 nm, the photoresponsivity is found to be ∼1.48 × 105 A W−1, which is 6.5 times larger than those of photodetectors without CNTs. These findings provide a highly versatile, reproducible, and low-cost platform to integrate novel zero-, one-, and two-dimensional materials into optical fibers and deliver more sophisticated functionalities.

Graphical abstract: A broadband all-fiber integrated graphene photodetector with CNT-enhanced responsivity

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Supplementary files

Article information


Submitted
07 Jan 2020
Accepted
12 Jun 2020
First published
12 Jun 2020

Nanoscale, 2020,12, 14188-14193
Article type
Paper

A broadband all-fiber integrated graphene photodetector with CNT-enhanced responsivity

L. Zhuo, P. Fan, S. Zhang, X. Liu, X. Guo, Y. Zhang, Y. Zhan, D. Li, Z. Che, W. Zhu, H. Zheng, J. Tang, J. Zhang, Y. Zhong, Y. Luo, J. Yu and Z. Chen, Nanoscale, 2020, 12, 14188
DOI: 10.1039/D0NR00139B

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