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Title: Pulsed hybrid field emitter

Abstract

A hybrid emitter exploits the electric field created by a rapidly depoled ferroelectric material. Combining the emission properties of a planar thin film diamond emitter with a ferroelectric alleviates the present technological problems associated with both types of emitters and provides a robust, extremely long life, high current density cathode of the type required by emerging microwave power generation, accelerator technology and display applications. This new hybrid emitter is easy to fabricate and not susceptible to the same failures which plague microstructure field emitter technology. Local electrode geometries and electric field are determined independently from those for optimum transport and brightness preservation. Due to the large amount of surface charge created on the ferroelectric, the emitted electrons have significant energy, thus eliminating the requirement for specialized phosphors in emissive flat-panel displays.

Inventors:
 [1]
  1. Manteca, CA
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
OSTI Identifier:
871400
Patent Number(s):
US 5723954
Assignee:
Regents of University of California (Oakland, CA)
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
pulsed; hybrid; field; emitter; exploits; electric; created; rapidly; depoled; ferroelectric; material; combining; emission; properties; planar; film; diamond; alleviates; technological; associated; types; emitters; provides; robust; extremely; life; current; density; cathode; type; required; emerging; microwave; power; generation; accelerator; technology; display; applications; easy; fabricate; susceptible; failures; plague; microstructure; local; electrode; geometries; determined; independently; optimum; transport; brightness; preservation; due; amount; surface; charge; emitted; electrons; significant; energy; eliminating; requirement; specialized; phosphors; emissive; flat-panel; displays; surface charge; current density; electric field; microwave power; power generation; field emitter; panel displays; panel display; charge created; field created; ferroelectric material; emission properties; emitted electrons; /315/257/313/

Citation Formats

Sampayan, Stephen E. Pulsed hybrid field emitter. United States: N. p., 1998. Web.
Sampayan, Stephen E. Pulsed hybrid field emitter. United States.
Sampayan, Stephen E. Thu . "Pulsed hybrid field emitter". United States. https://www.osti.gov/servlets/purl/871400.
@article{osti_871400,
title = {Pulsed hybrid field emitter},
author = {Sampayan, Stephen E},
abstractNote = {A hybrid emitter exploits the electric field created by a rapidly depoled ferroelectric material. Combining the emission properties of a planar thin film diamond emitter with a ferroelectric alleviates the present technological problems associated with both types of emitters and provides a robust, extremely long life, high current density cathode of the type required by emerging microwave power generation, accelerator technology and display applications. This new hybrid emitter is easy to fabricate and not susceptible to the same failures which plague microstructure field emitter technology. Local electrode geometries and electric field are determined independently from those for optimum transport and brightness preservation. Due to the large amount of surface charge created on the ferroelectric, the emitted electrons have significant energy, thus eliminating the requirement for specialized phosphors in emissive flat-panel displays.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1998},
month = {1}
}

Patent:

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