Highly Efficient Electron Emissions from Single-Crystalline CVD Diamond Surfaces(Special Issue on Field Electron Emission from Carbon Materials)
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概要
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Electron emissions from single-crystalline diamond surfaces by internally exciting electrons from the valence to conduction bands have been investigated. Monte Carlo simulations have been employed to estimate the impart ionization rates of carriers in diamond under high electric fields up to 1 × 10^7 V/cm. The calculations demonstrate substantial impact ionization rates which rapidly increase with increasing electric fields above 8 × 10^5 V/cm. Highly efficient electron emissions with high emission current efficiencies of approximate unity have been attained from a MIS-type diamond layered structure that are composed of heavily ion-implanted buried layer (M). undoped diamond (I) and hydrogenated p-type diamond (S) with an emission surface of a negative electron affinity. The highly efficient, emission mechanism is discussed in relation to the field excitation of electrons from the valence band to the conduction band in the undoped diamond layer and the carrier transport to the diamond surface.
- 社団法人電子情報通信学会の論文
- 2003-05-01
著者
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Ito Toshimichi
Department Of Electrical Electronic And Information Engineering Graduate School Of Engineering Osaka
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Ito Toshimichi
Department Of Electrical Engineering Graduate School Of Engineering Osaka University
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