Solution Processed Photodetectors with PVK-WS 2 Nanotube/Nanofullerene Organic-Inorganic Hybrid Films.

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 (WS 2 ) 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 WS 2 nanomaterials, one-dimensional (1D) WS 2 nanotubes (WS 2 -NTs) and a zero-dimensional (0D) WS 2 nanofullerene (WS 2 -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 WS 2 -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.