9.1: Negative electron affinity ultra-nano crystalline diamond based thermionic electron emitters for low to moderate temperature operation

Franz A M Koeck, Tianyin Sun, Robert Nemanich

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Diamond based electron sources utilize two key materials properties presenting a method of efficient electron emission. Negative electron affinity (NEA) characteristics of diamond surfaces, where the vacuum level is positioned below the conduction band minimum eliminates the surface emission barrier. With suitable dopants, an electronic band configuration can be achieved resulting in a low effective work function. We have prepared nitrogen-doped diamond emitter structures by plasma assisted chemical vapor deposition. These materials exhibit a low effective work function of about 1.3 eV with detectable thermionic electron emission at temperatures lower than 250°C.

Original languageEnglish (US)
Title of host publication23rd International Vacuum Nanoelectronics Conference, IVNC 2010
Pages187-188
Number of pages2
DOIs
StatePublished - Oct 29 2010
Event23rd International Vacuum Nanoelectronics Conference, IVNC 2010 - Palo Alto, CA, United States
Duration: Jul 26 2010Jul 30 2010

Publication series

Name23rd International Vacuum Nanoelectronics Conference, IVNC 2010

Other

Other23rd International Vacuum Nanoelectronics Conference, IVNC 2010
CountryUnited States
CityPalo Alto, CA
Period7/26/107/30/10

Keywords

  • Chemical vapor deposition
  • Diamond
  • Thermionic emission

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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    Koeck, F. A. M., Sun, T., & Nemanich, R. (2010). 9.1: Negative electron affinity ultra-nano crystalline diamond based thermionic electron emitters for low to moderate temperature operation. In 23rd International Vacuum Nanoelectronics Conference, IVNC 2010 (pp. 187-188). [5563195] (23rd International Vacuum Nanoelectronics Conference, IVNC 2010). https://doi.org/10.1109/IVNC.2010.5563195