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Title: Electron field emission in air at an atmospheric pressure from sp{sup 3}-bonded 5H-BN microcones

Abstract

Electron field emission (eFE) from sp{sup 3}-bonded 5H-BN films proved to take place in air at an atmospheric pressure. The eFE started at relatively low electric field (E) of 7.5 V/{mu}m and was reproducible. The eFE in air obeyed the Fowler-Nordheim equation for quantum mechanical tunneling. The BN films with self-organized microcone emitters were prepared by chemical vapor deposition from B{sub 2}H{sub 6}+NH{sub 3}+Ar plasma where 193 nm excimer laser irradiated the growing film surface. The laser activates the growth reactions photochemically and induces the cone-shape formation. The eFE from the same sample observed in vacuum showed the threshold E below 1 V/{mu}m. These excellent eFE properties are considered to originate from geometrical field enhancement by the microcone shape and the decrease of work function due to the surface electric dipole moment layer (4.3 eV, estimated by molecular orbital method). This atmospheric eFE combined with the robustness of BN may open a wide range of applications.

Authors:
; ; ; ; ; ;  [1];  [2];  [2];  [2];  [2]
  1. Advanced Electric Materials Center, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan)
  2. (Japan)
Publication Date:
OSTI Identifier:
20982834
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 101; Journal Issue: 8; Other Information: DOI: 10.1063/1.2717594; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; AIR; AMMONIA; ARGON; ATMOSPHERIC PRESSURE; BORON HYDRIDES; BORON NITRIDES; CHEMICAL VAPOR DEPOSITION; CRYSTAL GROWTH; ELECTRIC DIPOLE MOMENTS; ELECTRIC FIELDS; EXCIMER LASERS; FIELD EMISSION; INHOUR EQUATION; MOLECULAR ORBITAL METHOD; PHOTOCHEMISTRY; QUANTUM MECHANICS; SEMICONDUCTOR MATERIALS; THIN FILMS; TUNNEL EFFECT; WORK FUNCTIONS

Citation Formats

Komatsu, Shojiro, Ohta, Eiichi, Tanaka, Hironori, Moriyoshi, Yusuke, Nakajima, Kiyomi, Chikyo, Toyohiro, Shiratani, Masaharu, Ricoh Company, Ltd., Advanced Technology R and D Center, 16-1 Shinei-cho, Tsuzuki-ku, Yokohama 224-0035, College of Engineering, Department of Materials Science, Hosei University, 3-7-2 Kajino-machi, Koganei, Tokyo 184-8584, Advanced Electric Materials Center, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, and Department of Electronics, Graduate School of Information Science and Electrical Engineering, Kyushu University, Hakozaki, Fukuoka 812-8581. Electron field emission in air at an atmospheric pressure from sp{sup 3}-bonded 5H-BN microcones. United States: N. p., 2007. Web. doi:10.1063/1.2717594.
Komatsu, Shojiro, Ohta, Eiichi, Tanaka, Hironori, Moriyoshi, Yusuke, Nakajima, Kiyomi, Chikyo, Toyohiro, Shiratani, Masaharu, Ricoh Company, Ltd., Advanced Technology R and D Center, 16-1 Shinei-cho, Tsuzuki-ku, Yokohama 224-0035, College of Engineering, Department of Materials Science, Hosei University, 3-7-2 Kajino-machi, Koganei, Tokyo 184-8584, Advanced Electric Materials Center, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, & Department of Electronics, Graduate School of Information Science and Electrical Engineering, Kyushu University, Hakozaki, Fukuoka 812-8581. Electron field emission in air at an atmospheric pressure from sp{sup 3}-bonded 5H-BN microcones. United States. doi:10.1063/1.2717594.
Komatsu, Shojiro, Ohta, Eiichi, Tanaka, Hironori, Moriyoshi, Yusuke, Nakajima, Kiyomi, Chikyo, Toyohiro, Shiratani, Masaharu, Ricoh Company, Ltd., Advanced Technology R and D Center, 16-1 Shinei-cho, Tsuzuki-ku, Yokohama 224-0035, College of Engineering, Department of Materials Science, Hosei University, 3-7-2 Kajino-machi, Koganei, Tokyo 184-8584, Advanced Electric Materials Center, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, and Department of Electronics, Graduate School of Information Science and Electrical Engineering, Kyushu University, Hakozaki, Fukuoka 812-8581. Sun . "Electron field emission in air at an atmospheric pressure from sp{sup 3}-bonded 5H-BN microcones". United States. doi:10.1063/1.2717594.
@article{osti_20982834,
title = {Electron field emission in air at an atmospheric pressure from sp{sup 3}-bonded 5H-BN microcones},
author = {Komatsu, Shojiro and Ohta, Eiichi and Tanaka, Hironori and Moriyoshi, Yusuke and Nakajima, Kiyomi and Chikyo, Toyohiro and Shiratani, Masaharu and Ricoh Company, Ltd., Advanced Technology R and D Center, 16-1 Shinei-cho, Tsuzuki-ku, Yokohama 224-0035 and College of Engineering, Department of Materials Science, Hosei University, 3-7-2 Kajino-machi, Koganei, Tokyo 184-8584 and Advanced Electric Materials Center, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044 and Department of Electronics, Graduate School of Information Science and Electrical Engineering, Kyushu University, Hakozaki, Fukuoka 812-8581},
abstractNote = {Electron field emission (eFE) from sp{sup 3}-bonded 5H-BN films proved to take place in air at an atmospheric pressure. The eFE started at relatively low electric field (E) of 7.5 V/{mu}m and was reproducible. The eFE in air obeyed the Fowler-Nordheim equation for quantum mechanical tunneling. The BN films with self-organized microcone emitters were prepared by chemical vapor deposition from B{sub 2}H{sub 6}+NH{sub 3}+Ar plasma where 193 nm excimer laser irradiated the growing film surface. The laser activates the growth reactions photochemically and induces the cone-shape formation. The eFE from the same sample observed in vacuum showed the threshold E below 1 V/{mu}m. These excellent eFE properties are considered to originate from geometrical field enhancement by the microcone shape and the decrease of work function due to the surface electric dipole moment layer (4.3 eV, estimated by molecular orbital method). This atmospheric eFE combined with the robustness of BN may open a wide range of applications.},
doi = {10.1063/1.2717594},
journal = {Journal of Applied Physics},
number = 8,
volume = 101,
place = {United States},
year = {Sun Apr 15 00:00:00 EDT 2007},
month = {Sun Apr 15 00:00:00 EDT 2007}
}