In:
Journal of Vacuum Science & Technology B, Nanotechnology and Microelectronics: Materials, Processing, Measurement, and Phenomena, American Vacuum Society, Vol. 30, No. 4 ( 2012-07-01)
Abstract:
To achieve an optimum cold cathode emitter, well-aligned TiO2/Ti nanotube arrays (TNAs) were synthesized by anodic oxidation and doped with carbon by pyrolysis of C2H2 at 550 °C. By controlling the carbon doping content, the field emission (FE) properties of carbon-doped TiO2/Ti nanotube arrays (C-TNAs) were optimized. Compared with the high turn-on field of 19.19 V/μm from pure TNAs, the turn-on field of C-TNAs was decreased to 11.60, 6.35, 4.10, and 5.77 V/μm when the doping content of carbon was increased to 0.62, 0.82, 1.81, and 3.31 at. %, respectively. Obviously, the FE properties of TNAs were dramatically improved and optimized by adjusting the carbon doping content, which can be attributed to the typical tubular morphology, an enhanced conductivity, and a reduced work function.
Type of Medium:
Online Resource
ISSN:
2166-2746
,
2166-2754
Language:
English
Publisher:
American Vacuum Society
Publication Date:
2012
detail.hit.zdb_id:
3117331-7
detail.hit.zdb_id:
1475429-0
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