Electronic properties of single crystalline diamond surfaces

Key parameters of the surface electronic structure of diamond (111), such a s surface core level shifts, surface state dispersion, band bending, and el ectron affinity, are presented and discussed. The first actual value for th e negative electron affinity of diamond (111):H 1 x 1 is measured as chi=-1 .27 eV. A model is given that describes the variation in chi with hydrogen coverage quantitatively in terms of C-H bond dipoles. (C) 1999 Published by Elsevier Science Ltd. All rights reserved.