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Change in crystalline structure of W(18)O(49) nanowires induced by X-ray irradiation and its effects on field emission
W(18)O(49) nanowires were synthesized by thermal evaporation, and the effects of X-ray irradiation on their crystalline structure, chemical composition, and field emission properties were systematically investigated. High-energy X-ray irradiation created nanoprotrusions on the surface of W(18)O(49)...
| Autores principales: | , , , , , |
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| Formato: | Online Artículo Texto |
| Lenguaje: | English |
| Publicado: |
The Royal Society of Chemistry
2018
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| Materias: | |
| Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9076934/ https://www.ncbi.nlm.nih.gov/pubmed/35538982 http://dx.doi.org/10.1039/c7ra12791j |
| Sumario: | W(18)O(49) nanowires were synthesized by thermal evaporation, and the effects of X-ray irradiation on their crystalline structure, chemical composition, and field emission properties were systematically investigated. High-energy X-ray irradiation created nanoprotrusions on the surface of W(18)O(49) nanowires and introduced crystalline slipping in the lattice. X-ray photoelectron spectroscopy results showed that the content of lattice oxygen increased and nitrogen was incorporated into the W(18)O(49) nanowires after X-ray irradiation. Nevertheless, a stable and high current emission still could be obtained from the W(18)O(49) nanowires after X-ray irradiation, with a slight increase in the threshold field from 6.4 to 7.9 MV m(−1). The mechanism of the change in crystalline structure, chemical composition, and field emission performance of W(18)O(49) nanowires induced by X-ray irradiation is discussed. |
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