High-responsivity photodetector based on scrolling monolayer MoS2 hybridized with carbon quantum dots. (13th December 2021)

• Record Type: Journal Article
• Authors: Zhang, Shichao; Gao, Feng; Feng, Wei; Yang, Huihui; Hu, Yunxia; Zhang, Jia; Xiao, Haiying; Li, Zhonghua; Hu, PingAn
• Is Part Of: Nanotechnology. Volume 33:Number 10(2022)
• Publication Date: 2021-12-13
• Subjects: monolayer MoS2 -- carbon quantum dots -- nanoscroll -- hybridization -- photodetector; Nanotechnology -- Periodicals; Nanotechnology -- Periodicals; Nanotechnology; Publications périodiques; Nanotechnologies; Periodicals; 620.5
• DOI: 10.1088/1361-6528/ac3ce1
• Languages: English
• ISSNs: 0957-4484

Abstract

Abstract: The monolayer MoS2 based photodetectors have been widely investigated, which show limited photoelectric performances due to its low light absorption and uncontrollable adsorbates. In this paper, we present a MoS2 -based hybrid nanoscrolls device, in which one-dimensional nanoscrollsof MoS2 is hybridized with carbon quantum dots (CQDs). This device architecture effectively enhanced the photodetection performance. The photoresponsivity and detectivity values of MoS2 /CQDs-NS photodetectors are respectively 1793 A W −1 and 5.97 × 10 12 Jones, which are 830-fold and 268-fold higher than those of pristine MoS2 under 300 nm illumination at V ds = 5 V. This research indicates a significant progress in fabricating high-performance MoS2 photodetectors.