On the thermionic emission from nitrogen-doped diamond films with respect to energy conversion

F. A.M. Koeck, J. M. Garguilo, R. J. Nemanich

Research output: Contribution to journalConference articlepeer-review

33 Scopus citations


Thermionic energy converters utilize thermal energy and efficiently transform it into more useful electrical energy. A key aspect inthermion thermionic energy conversion is the emission of electrons at elevated temperatures, where the electron emitter is separated from the collector by a vacuum gap and a voltage is generated due to the temperature difference between the emitter and collector. In this study, nitrogen-doped diamond films with a negative electron affinity surface have been synthesized with plasma-assisted chemical vapor deposition, and the electron emission has been imaged using high-resolution electron emission microscopy. This study reports the measurement of a thermovoltage and current, i.e. energy conversion, at temperatures considerably less than 1000°C.

Original languageEnglish (US)
Pages (from-to)2052-2055
Number of pages4
JournalDiamond and Related Materials
Issue number11-12
StatePublished - Nov 2004
Externally publishedYes
EventProceedings of the 9th International Conference on New Diamond - Tokyo, Japan
Duration: Mar 26 2004Mar 29 2004


  • CVD
  • Doped diamond
  • Energy conversion
  • Thermionic emission

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • General Chemistry
  • Mechanical Engineering
  • Materials Chemistry
  • Electrical and Electronic Engineering


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