@inproceedings{eb7d655706b14760a12cf0907e6c8bdc,
title = "Schottky emitters with carbon nanotubes as electron source",
abstract = "In this paper we present a simple approach for making a Schottky emitter with Carbon Nanotubes (CNTs). A tungsten wire of 0.3 mm diameter was used as a heating filament. An iron rod of 0.3 mm diameter having a sharp tip was weld-bonded to the filament. By heating the filament to around 750°C in a mixture of (C2H2+Ar), multi-wall CNTs was grown at the Fe tip. Electron field emission and thermal-field emission properties of the fabricated Schottky emitter were measured at different temperatures. At room temperature, the field emission current well obeyed the Fowler-Nordheim (F-N) mechanism with threshold voltage of around 0.2 V/μm. At the temperature of higher than 780°C, the thermal-field emission dominated and both field emission and thermal-field emission were very stable with very low fluctuation. Enhancement factor of 1.3 ×107 m-1 and work function of 4.95 eV were evaluated for the grown CNTs. The mentioned CNT-Schottky emitters for advanced electron beam instruments are expected.",
keywords = "CNTs, Electron sources, Field emission, Schottky emission",
author = "Minh, {Phan Ngoc} and Hong, {Nguyen Tuan} and Minh, {Ngo Quang} and Khoi, {Phan Hong} and Yuka Nomura and Takahito Ono and Masayoshi Esashi",
year = "2005",
language = "English",
isbn = "0780389948",
series = "Digest of Technical Papers - International Conference on Solid State Sensors and Actuators and Microsystems, TRANSDUCERS '05",
pages = "267--270",
booktitle = "TRANSDUCERS '05 - 13th International Conference on Solid-State Sensors and Actuators and Microsystems - Digest of Technical Papers",
note = "13th International Conference on Solid-State Sensors and Actuators and Microsystems, TRANSDUCERS '05 ; Conference date: 05-06-2005 Through 09-06-2005",
}