Phonon-assisted electron emitting cathode and phonon-assisted electron emitting device

Abstract

The invention discloses a phonon-assisted electron emitting cathode and a phonon-assisted electron emitting device, which belong to the technical field of electronic science. The phonon-assisted electron emitting cathode comprises an electron emitter and an electrode pair, wherein the annihilation time of phonons in the electron emitter is longer than the generation time, and after an electric field is applied, the unbalanced phonons can be generated through the interaction of electrons and the phonons; the electrons in the electron emitter are subjected to the dispersion of the phonons afterbeing accelerated through the electric field, and when in dispersion, the phonons can be absorbed by the electrons; and after dispersion, the moving direction of the electrons can be kept unchanged. The phonon-assisted electron emitting device comprises the phonon-assisted electron emitting cathode, a support and an anode. The invention can be widely used for all kinds of electronic equipment related to electron emission, such as displays, electron sources, light sources and the like.

Description

technical field [0001] The invention belongs to the field of electronic science and technology, and particularly relates to a novel electron-emitting cathode and electron-emitting device. The novel electron-emitting cathode and device only need a working voltage of several volts and do not require heating, and can be widely used in displays, electron sources, Various electronic devices involving electron emission, such as light sources. Background technique [0002] Electron emission cathodes and electron emission devices are key components of many electronic products and large electronic equipment (such as electron emission displays, electron microscopes, electron beam recorders, etc.), and are indispensable for the development of the electronics industry and electronic science and technology research institutes. [0003] At present, there are mainly three kinds of electron emission cathodes: thermal emission cathode, field emission cathode and thermal field emission cathod...

AI Technical Summary

Problems solved by technology

Although a single carbon nanotube cathode has good field emission characteristics, the current technology is difficult to control the size and tip structure of the carbon nanotube cathode, which are the key factors determining the field emission characteristics of carbon nanotubes

Therefore, the cathode array based on carbon nanotubes cannot meet the requirement that each cathode has uniform and controllable electron emission characteristics, so that the carbon nanotube field emission display has not been really practical so far (N.de Jonge et al., Phil .Trans.R.Soc.Lond.A, 2004, 362, 2239)

Images