Electron Affinity of the Bare and Hydrogen Covered Single Crystal Diamond (111) Surface

1998/07/13 by Jingbiao Cui, J. Ristein, L. Ley · 1 voice · 4 citations
Materials Science · Physics and Astronomy · #Advanced Chemical Physics Studies #Diamond and Carbon-based Materials Research #Electronic and Structural Properties of Oxides

paper · doi:10.1103/physrevlett.81.429

openalex publication_date 1998/07/13 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/23

Abstract

The electron affinity \ensuremathχ and the band diagram of single crystal diamond (111) surfaces was determined as a function of hydrogen coverage by combining work function measurements with photoelectron yield and core level photoemission spectroscopy. \ensuremathχ ranges from \ensuremath-1.27eV for the fully hydrogen covered (1\ifmmode×\else\texttimes\fi1) surface to +0.38eV for the hydrogen free (2\ifmmode×\else\texttimes\fi1) reconstructed surface. This change is quantitatively explained by a surface dipole model provided a coverage dependent depolarization is included. The dipole moment of the C-H bond on diamond (111) is found to be 0.09e\AA.

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Discussions

• I am currently researching about hydrogen terminated diamond, in this paper https://doi.org/10.1103/PhysRevLett.81.429 , it is mentioned due to the dipole layer at hydrogen terminated diamond surface, [stackexchange, 1 points]

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