Duan, Jing Lai ; Lei, Dang Yuan ; Chen, Fei ; Lau, Shu Ping ; Milne, William I. ; Toimil-Molares, M. E. ; Trautmann, Christina ; Liu, Jie (2016)
Vertically-Aligned Single-Crystal Nanocone Arrays: Controlled Fabrication and Enhanced Field Emission.
In: ACS Applied Materials & Interfaces, 8 (1)
doi: 10.1021/acsami.5b09374
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Metal nanostructures with conical shape, vertical alignment, large ratio of cone height and curvature radius at the apex, controlled cone angle, and single-crystal structure are ideal candidates for enhancing field electron-emission efficiency with additional merits, such as good mechanical and thermal stability. However, fabrication of such nanostructures possessing all these features is challenging. Here, we report on the controlled fabrication of large scale, vertically aligned, and mechanically self-supported single-crystal Cu nanocones with controlled cone angle and enhanced field emission. The Cu nanocones were fabricated by ion-track templates in combination with electrochemical deposition. Their cone angle is controlled in the range from 0.3° to 6.2° by asymmetrically selective etching of the ion tracks and the minimum tip curvature diameter reaches down to 6 nm. The field emission measurements show that the turn-on electric field of the Cu nanocone field emitters can be as low as 1.9 V/μm at current density of 10 μA/cm2 (a record low value for Cu nanostructures, to the best of our knowledge). The maximum field enhancement factor we measured was as large as 6068, indicating that the Cu nanocones are promising candidates for field emission applications.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2016 |
| Autor(en): | Duan, Jing Lai ; Lei, Dang Yuan ; Chen, Fei ; Lau, Shu Ping ; Milne, William I. ; Toimil-Molares, M. E. ; Trautmann, Christina ; Liu, Jie |
| Art des Eintrags: | Bibliographie |
| Titel: | Vertically-Aligned Single-Crystal Nanocone Arrays: Controlled Fabrication and Enhanced Field Emission |
| Sprache: | Englisch |
| Publikationsjahr: | 13 Januar 2016 |
| Verlag: | ACS Publications |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | ACS Applied Materials & Interfaces |
| Jahrgang/Volume einer Zeitschrift: | 8 |
| (Heft-)Nummer: | 1 |
| DOI: | 10.1021/acsami.5b09374 |
| Kurzbeschreibung (Abstract): | Metal nanostructures with conical shape, vertical alignment, large ratio of cone height and curvature radius at the apex, controlled cone angle, and single-crystal structure are ideal candidates for enhancing field electron-emission efficiency with additional merits, such as good mechanical and thermal stability. However, fabrication of such nanostructures possessing all these features is challenging. Here, we report on the controlled fabrication of large scale, vertically aligned, and mechanically self-supported single-crystal Cu nanocones with controlled cone angle and enhanced field emission. The Cu nanocones were fabricated by ion-track templates in combination with electrochemical deposition. Their cone angle is controlled in the range from 0.3° to 6.2° by asymmetrically selective etching of the ion tracks and the minimum tip curvature diameter reaches down to 6 nm. The field emission measurements show that the turn-on electric field of the Cu nanocone field emitters can be as low as 1.9 V/μm at current density of 10 μA/cm2 (a record low value for Cu nanostructures, to the best of our knowledge). The maximum field enhancement factor we measured was as large as 6068, indicating that the Cu nanocones are promising candidates for field emission applications. |
| Freie Schlagworte: | ion track template, copper, single-crystal, nanocone array, field emission |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Ionenstrahlmodifizierte Materialien 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften |
| Hinterlegungsdatum: | 18 Apr 2016 07:49 |
| Letzte Änderung: | 18 Apr 2016 07:49 |
| PPN: | |
| Sponsoren: | The financial support from the National Natural Science Foundation of China (Grant Nos. 11175221, 11474240, 11375241, and 11179003) and the Hong Kong Research Grants Council (ECS Grant No. 509513) are acknowledged., The financial support from the Hong Kong Innovation and Technology Commission (ITF Grant No. ITS/ 196/13), and the West Light Foundation of the Chinese Academy of Sciences are acknowledged. |
| Export: | |
| Suche nach Titel in: | TUfind oder in Google |
 |
Frage zum Eintrag |
Optionen (nur für Redakteure)
 |
Redaktionelle Details anzeigen |
Drucken
Impressum