Plasmonic MXene Nanoparticle-Enabled High-Performance Two-Dimensional MoS2 Photodetectors

Jihua Zou; Yixuan Huang; Wenhao Wang; Caihong Li; Shunyong Wei; Hezhuang Liu; Lingzhi Luo; Wen Du; Kai Shen; Aobo Ren; Jiang Wu

doi:10.1021/acsami.1c22074

Plasmonic MXene Nanoparticle-Enabled High-Performance Two-Dimensional MoS₂ Photodetectors

ACS Appl Mater Interfaces. 2022 Feb 16;14(6):8243-8250. doi: 10.1021/acsami.1c22074. Epub 2022 Feb 1.

Authors

Jihua Zou¹, Yixuan Huang¹, Wenhao Wang¹, Caihong Li¹, Shunyong Wei¹, Hezhuang Liu¹, Lingzhi Luo¹, Wen Du¹, Kai Shen¹, Aobo Ren¹, Jiang Wu^{1

2}

Affiliations

¹ Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, China.
² State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 611731, China.

PMID: 35104399
DOI: 10.1021/acsami.1c22074

Abstract

Two-dimensional (2D) molybdenum disulfide (MoS₂) has emerged as a prospective candidate for photodetection. However, due to the surface defects formed during the synthesis, the low photoresponse of 2D MoS₂ photodetectors restricts its practical applications. Here, we developed a hybrid plasmonic structure that integrates MXene nanoparticles (MNPs) and 2D MoS₂. With the introduction of MNPs, light waves are concentrated on MoS₂ nanosheets via a strong localized surface plasmon resonance. Consequently, MNPs-decorated MoS₂ photodetectors exhibit an improved photoresponse, including a higher responsivity (20.67 A/W), a larger detectivity of 5.39 × 10¹² Jones, and a maximum external quantum efficiency of over 5000%. A 150-fold enhanced detectivity (2.33 × 10¹² Jones) was achieved under 635 nm light illumination in the optimized device. These results provide an alternative approach for improving the photoresponse of MoS₂ photodetectors.

Keywords: MXene nanoparticles; MoS2 photodetector; high-performance photodetector; hybrid plasmonic structure; localized surface plasmon resonance.