Solution Processed Photodetectors with PVK-WS2 Nanotube/Nanofullerene Organic-Inorganic Hybrid Films

Fenghua Liu; Huanli Zhou; Yunjiao Gu; Zhenbiao Dong; Yi Yang; Zan Wang; Tong Zhang; Weiping Wu

doi:10.1021/acsami.2c10745

Solution Processed Photodetectors with PVK-WS₂ Nanotube/Nanofullerene Organic-Inorganic Hybrid Films

ACS Appl Mater Interfaces. 2022 Sep 28;14(38):43612-43620. doi: 10.1021/acsami.2c10745. Epub 2022 Sep 13.

Authors

Fenghua Liu^{1

2

3}, Huanli Zhou⁴, Yunjiao Gu^{1

2

3}, Zhenbiao Dong⁵, Yi Yang⁴, Zan Wang^{1

2

3}, Tong Zhang⁴, Weiping Wu^{1

2

3}

Affiliations

¹ Laboratory of Thin Film Optics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai201800, People's Republic of China.
² State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai201800, People's Republic of China.
³ Key Laboratory of Materials for High Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai201800, People's Republic of China.
⁴ Joint International Research Laboratory of Information Display and Visualization, School of Electronic Science and Engineering, Southeast University, Nanjing, 210096, People's Republic of China.
⁵ School of Mechanical Engineering, Shanghai Institute of Technology, Shanghai, 201418, People's Republic of China.

PMID: 36099066
DOI: 10.1021/acsami.2c10745

Abstract

Organic-inorganic hybrid photodetectors have attracted increased interest due to their exceptional properties, such as flexibility, transparency, and low cost for many promising applications. Low-dimensional tungsten disulfide (WS₂) nanostructures have outstanding electrical and optical properties, making them ideal candidates for ultrasensitive photodetector devices. In this paper, photodetectors were fabricated with hybrid thin films containing two different WS₂ nanomaterials, one-dimensional (1D) WS₂ nanotubes (WS₂-NTs) and a zero-dimensional (0D) WS₂ nanofullerene (WS₂-FLs) hybrid with poly(N-vinyl carbazole) (PVK). The electrical responses of the devices under visible-light illuminations were studied. The photodetector devices with 0D WS₂-FLs/PVK hybrid thin films have relatively higher sensitivity and stable voltage responses to visible light. Besides, the hybrid film shows a strong surface-enhanced Raman effect (SERS). These materials and new strategies enable the creation of a new class of processed photodetectors for practical applications.

Keywords: optoelectronic devices; organic−inorganic hybrid films; organic−inorganic hybrid materials; photodetectors; tungsten disulfide nanofullerenes; tungsten disulfide nanotubes.