The state and potential of diamond in efficient direct energy conversion

Franz A. Koeck, Robert Nemanich

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

Abstract

The transformation of thermal into electrical energy through thermionic energy conversion allows high conversion efficiencies as the hot and cold side are separated by a vacuum gap. Electrons released through thermal excitation from a cathode are collected by a counter-electrode with lower work function, ideally about 0.5eV, which can define the conversion efficiency. Converter electrodes based on diamond could achieve optimum work function values for emitter and collector by exploiting donor states introduced by nitrogen at 1.7eV and phosphorus at 0.6eV below the conduction band minimum, respectively. With the ability of diamond surfaces to attain a negative electron (NEA) affinity a surface barrier for electron emission can be mitigated and through single crystal material its stability at elevated temperatures enhanced.

Original languageEnglish (US)
Title of host publication2016 29th International Vacuum Nanoelectronics Conference, IVNC 2016
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781509024193
DOIs
StatePublished - Aug 24 2016
Event29th International Vacuum Nanoelectronics Conference, IVNC 2016 - Vancouver, Canada
Duration: Jul 11 2016Jul 15 2016

Other

Other29th International Vacuum Nanoelectronics Conference, IVNC 2016
CountryCanada
CityVancouver
Period7/11/167/15/16

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Keywords

  • diamond
  • doping
  • plasma enhanced chemical vapor deposition
  • thermionic conversion
  • thermionic electron emission

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Electrical and Electronic Engineering
  • Atomic and Molecular Physics, and Optics

Cite this

Koeck, F. A., & Nemanich, R. (2016). The state and potential of diamond in efficient direct energy conversion. In 2016 29th International Vacuum Nanoelectronics Conference, IVNC 2016 [7551462] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/IVNC.2016.7551462