A broadband all-fiber integrated graphene photodetector with CNT-enhanced responsivity. Issue 26 (30th June 2020)

• Record Type: Journal Article
• Authors: Zhuo, Linqing; Fan, Pengpeng; Zhang, Shuang; Liu, Xiaohe; Guo, Xinyi; Zhang, Yu; Zhan, Yuansong; Li, Dongquan; Che, Zhen; Zhu, Wenguo; Zheng, Huadan; Tang, Jieyuan; Zhang, Jun; Zhong, Yongchun; Luo, Yunhan; Yu, Jianhui; Chen, Zhe
• Is Part Of: Nanoscale. Volume 12:Issue 26(2020)
• Page Start: 14188
• Page End: 14193
• Publication Date: 2020-06-30
• Subjects: Nanoscience -- Periodicals; Nanotechnology -- Periodicals; 620.505
• DOI: 10.1039/d0nr00139b
• Languages: English
• ISSNs: 2040-3364

Abstract

Abstract : We achieve a broadband and ultrahigh responsivity all-fiber photodetector by integrating hybrid CNT/graphene films on a side-polished fiber (SPF). 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 × 10 5 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.