Serbun, P. ; Jordan, F. ; Muller, G. ; Alber, I. ; Toimil-Molares, M. E. ; Trautmann, C. (2013)
Sharp bare and gold-coated copper nanocones with improved field emission performance.
26th International Vacuum Nanoelectronics Conference (IVNC). Roanoke, VA, USA (08.07.-12.07.2013)
doi: 10.1109/ivnc.2013.6624750
Konferenzveröffentlichung, Bibliographie
Kurzbeschreibung (Abstract)
We have optimized the fabrication of sharp copper nanocones (Cu-NCs) for flat patch-structured field emission (FE) cathodes. Polycarbonate (PC) foils were irradiated through a shadow mask with swift Xe or U ions. The ion tracks were asymmetrically etched in a mixture of NaOH and methanol. These membranes were metallized, fixed on an Al plate, and electrochemically filled with Cu through the small pore openings. Flat cathodes of 25 mm 2 size with mechanically stable Cu-NCs of ~28 μm height, ~3 μm base, and ~130 nm tip diameter were obtained. Fairly distributed FE with at least 8 (10) emitters per patch was achieved for the bare (60-nm Au-coated) Cu-NCs. Integral measurements of selected patches yielded average stable FE currents up to 30 (151) μA at 32 (50) V/μm, respectively.
| Typ des Eintrags: | Konferenzveröffentlichung |
|---|---|
| Erschienen: | 2013 |
| Autor(en): | Serbun, P. ; Jordan, F. ; Muller, G. ; Alber, I. ; Toimil-Molares, M. E. ; Trautmann, C. |
| Art des Eintrags: | Bibliographie |
| Titel: | Sharp bare and gold-coated copper nanocones with improved field emission performance |
| Sprache: | Englisch |
| Publikationsjahr: | 2013 |
| Ort: | New York, NY |
| Verlag: | IEEE |
| Buchtitel: | 26th International Vacuum Nanoelectronics Conference (IVNC) |
| Veranstaltungstitel: | 26th International Vacuum Nanoelectronics Conference (IVNC) |
| Veranstaltungsort: | Roanoke, VA, USA |
| Veranstaltungsdatum: | 08.07.-12.07.2013 |
| DOI: | 10.1109/ivnc.2013.6624750 |
| Kurzbeschreibung (Abstract): | We have optimized the fabrication of sharp copper nanocones (Cu-NCs) for flat patch-structured field emission (FE) cathodes. Polycarbonate (PC) foils were irradiated through a shadow mask with swift Xe or U ions. The ion tracks were asymmetrically etched in a mixture of NaOH and methanol. These membranes were metallized, fixed on an Al plate, and electrochemically filled with Cu through the small pore openings. Flat cathodes of 25 mm 2 size with mechanically stable Cu-NCs of ~28 μm height, ~3 μm base, and ~130 nm tip diameter were obtained. Fairly distributed FE with at least 8 (10) emitters per patch was achieved for the bare (60-nm Au-coated) Cu-NCs. Integral measurements of selected patches yielded average stable FE currents up to 30 (151) μA at 32 (50) V/μm, respectively. |
| Freie Schlagworte: | field emission, ion-track etching, Cu nanocones, Au coating,current limits |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Ionenstrahlmodifizierte Materialien |
| Hinterlegungsdatum: | 18 Mär 2024 07:55 |
| Letzte Änderung: | 18 Mär 2024 07:55 |
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