Argon and hydrogen plasma interactions on diamond (111) surfaces: Electronic states and structure

J. Van Der Weide, Robert Nemanich

Research output: Contribution to journalArticle

129 Citations (Scopus)

Abstract

Photoemission spectroscopy was used to compare the effects of a hydrogen or argon plasma on natural-type 2B diamond (111) surfaces, while the diamond was heated to 350°C. After the hydrogen plasma the surface exhibits a negative electron affinity, indicative of a hydrogen-terminated surface. In contrast, the argon plasma was found to result in a surface with a positive electron affinity of 1.0 eV, indicating the removal of hydrogen from the surface. Features characteristic of graphite were not observed. After reexposing the surface to a hydrogen plasma, the spectrum was identical to the spectrum obtained after the initial hydrogen plasma.

Original languageEnglish (US)
Pages (from-to)1878-1880
Number of pages3
JournalApplied Physics Letters
Volume62
Issue number16
DOIs
StatePublished - 1993
Externally publishedYes

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plasma interactions
argon plasma
hydrogen plasma
diamonds
electronics
negative electron affinity
hydrogen
electron affinity
photoelectric emission
graphite
spectroscopy

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Argon and hydrogen plasma interactions on diamond (111) surfaces : Electronic states and structure. / Van Der Weide, J.; Nemanich, Robert.

In: Applied Physics Letters, Vol. 62, No. 16, 1993, p. 1878-1880.

Research output: Contribution to journalArticle

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