One-dimensional semiconductors have emerged as a promising avenue for various electronic and optoelectronic applications due to their remarkable electrical and optical characteristics. Among them, the utilization of thin films composed of randomly oriented multiwalled tungsten disulfide (WS 2 ) nanotubes (NTs) has garnered significant attention. The unique structural properties of WS 2 nanotubes, along with their inherent semiconducting nature and relatively small bandgap, make them an ideal candidate for photodetection in the visible-light spectrum. Indeed, the interdigitated photodetector based on WS 2 nanotubes exhibits exceptional sensitivity to visible light. The nanotube small bandgap and unique surface-to-volume ratio enable efficient light absorption and charge generation upon photon absorption. This leads to a high signal-to-noise ratio and enhanced sensitivity, enabling the detection even at a low intensity of 10%. In this work, we demonstrate the potential of utilizing randomly oriented multiwalled WS 2 nanotubes as the active material in interdigitated photodetectors. The combination of their excellent electrical and optical properties, fast response time, and high sensitivity make them an appealing choice for visible-light detection.

Multiwalled WS₂ nanotubes on interdigitated electrodes for visible-light photodetectors

Durante, Ofelia
Writing – Original Draft Preparation
;
Stefano, Sebastiano De
Formal Analysis
;
Passacantando, Maurizio
Formal Analysis
;
Giubileo, Filippo
Investigation
;
Antonio Di Bartolomeo
Writing – Review & Editing
2023-01-01

Abstract

One-dimensional semiconductors have emerged as a promising avenue for various electronic and optoelectronic applications due to their remarkable electrical and optical characteristics. Among them, the utilization of thin films composed of randomly oriented multiwalled tungsten disulfide (WS 2 ) nanotubes (NTs) has garnered significant attention. The unique structural properties of WS 2 nanotubes, along with their inherent semiconducting nature and relatively small bandgap, make them an ideal candidate for photodetection in the visible-light spectrum. Indeed, the interdigitated photodetector based on WS 2 nanotubes exhibits exceptional sensitivity to visible light. The nanotube small bandgap and unique surface-to-volume ratio enable efficient light absorption and charge generation upon photon absorption. This leads to a high signal-to-noise ratio and enhanced sensitivity, enabling the detection even at a low intensity of 10%. In this work, we demonstrate the potential of utilizing randomly oriented multiwalled WS 2 nanotubes as the active material in interdigitated photodetectors. The combination of their excellent electrical and optical properties, fast response time, and high sensitivity make them an appealing choice for visible-light detection.
2023
979-8-3503-3546-0
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11386/4852555
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 0
  • ???jsp.display-item.citation.isi??? ND
social impact