Hierarchical WSe <sub>2</sub> Nanoflowers for Efficient Field Emission
Abstract This report is on the field emission properties of WSe 2 nanoflowers synthesized via a solution‐phase colloidal approach, uniformly deposited on Si/SiO 2 substrates. Structural and spectroscopic data confirm the formation of highly crystalline nanoflowers with predominantly 1T′ phase content and minimal surface oxidation. Field emission measurements, performed in vacuum using a nanomanipulated tungsten probe, reveal a low turn‐on voltage and a field enhancement factor ranging from ≈70 at cathode‐anode separation distance of 100 nm, to ≈10 for distance increased to 900 nm, as resulting by the analysis in the framework of the Fowler–Nordheim model. WSe 2 nanoflowers offer competitive performance combined with excellent stability, attributable to their hierarchical architecture and metallic character. These results demonstrate the potential of WSe 2 nanoflowers as efficient cold cathode materials for next‐generation vacuum electronic applications.
Authors
- Aniello Pelella (ORCID: https://orcid.org/0000-0002-3831-0210)
- Enver Faella (ORCID: https://orcid.org/0000-0002-5782-6685)
- Filippo Giubileo (ORCID: https://orcid.org/0000-0003-2233-3810)
- M. Passacantando (ORCID: https://orcid.org/0000-0002-3680-5295)
- Loredana Viscardi (ORCID: https://orcid.org/0000-0002-9674-7752)
- Cecilia Mattevi (ORCID: https://orcid.org/0000-0003-0005-0633)
- S. De Stefano (ORCID: https://orcid.org/0009-0007-8492-0857)
- Gang Cheng (ORCID: https://orcid.org/0000-0002-9211-1044)
- O. Durante (ORCID: https://orcid.org/0000-0002-3539-3858)
- Andrea Sessa (ORCID: https://orcid.org/0009-0009-7988-2520)
- Kimberly Intonti (ORCID: https://orcid.org/0000-0003-1755-183X)
- Antonio Di Bartolomeo (ORCID: https://orcid.org/0000-0002-3629-726X)
- Adolfo Mazzotti (ORCID: https://orcid.org/0009-0008-9021-7874)
Institutions
- University of Rome Tor Vergata (IT)
- University of Salerno (IT)
- University of L'Aquila (IT)
- Imperial College London (GB)
Publication Details
- Journal
- Advanced Electronic Materials
- Published
- 2025-10-13
- DOI
- https://doi.org/10.1002/aelm.202500490
- Primary Topic
- 2D Materials and Applications
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- European Commission