High-responsivity photodetector based on scrolling monolayer MoS <sub>2</sub> hybridized with carbon quantum dots
Shichao Zhang, Feng Gao, Wei Feng, Huihui Yang, Yunxia Hu, Jia Zhang, Haiying Xiao, Zhonghua Li, PingAn Hu
Abstract
Abstract The monolayer MoS 2 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 MoS 2 -based hybrid nanoscrolls device, in which one-dimensional nanoscrollsof MoS 2 is hybridized with carbon quantum dots (CQDs). This device architecture effectively enhanced the photodetection performance. The photoresponsivity and detectivity values of MoS 2 /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 MoS 2 under 300 nm illumination at V ds = 5 V. This research indicates a significant progress in fabricating high-performance MoS 2 photodetectors.