Synergistic enhancement of photoluminesent intensity in monolayer molybdenum disulfide embedded with plasmonic nanostructures for catalytic sensing

Research output: Contribution to journalResearch articleContributedpeer-review

Contributors

  • Mahsa Jalali - , Hong Kong University of Science and Technology, McGill University (Author)
  • Zhaoli Gao - , Chinese University of Hong Kong (Author)
  • Ye Yu - , Center for Advancing Electronics Dresden (cfaed), Chair of Microsystems (Author)
  • Roozbeh Siavash Moakhar - , McGill University (Author)
  • Yao Ding - , Hong Kong University of Science and Technology (Author)
  • Minghao Zhuang - , Hong Kong University of Science and Technology (Author)
  • Nan Zhou - , Huazhong University of Science and Technology (Author)
  • Tobias König - , Leibniz Institute of Polymer Research Dresden (Author)
  • Andreas Fery - , Chair of Physical Chemistry of Polymeric Materials, Leibniz Institute of Polymer Research Dresden (Author)
  • Sara Mahshid - , McGill University (Author)
  • Zhengtang Luo - , Hong Kong University of Science and Technology (Author)

Abstract

Enhancing photoluminescence (PL) of semiconducting 2D materials is proven essential for many applications related to optoelectronics and sensing. Here, we demonstrate synergistic PL enhancement in 2D materials by incorporating silver plasmonic nanodiscs in defect-induced monolayer molybdenum disulfide (MoS2) for luminescent quench sensing of dopamine with high accuracy and selectivity. We develop a hole-array perforated 2D MoS2 embedded with plasmonic silver dimers to harmonize the surface plasmon resonance with the PL wavelength of monolayer MoS2, which enhance it by 56-fold. We implemented the optimized perforated MoS2/dimers platform as a catalytic assay for on-chip PL quenching detection of dopamine, achieving a low limit of detection of 9.3 nM. This approach opens avenues of high-performance molecular sensing applications by improving the PL emission of 2D materials.

Details

Original languageEnglish
Article number035049
Journal2D materials
Volume8
Issue number3
Publication statusPublished - Jul 2021
Peer-reviewedYes