Negative electron affinity on polycrystalline diamond surface induced by lithium fluoride deposition

Authors
Wong, KW Wang, YM Lee, ST Kwok, RWM
Citation
Kw. Wong et al., Negative electron affinity on polycrystalline diamond surface induced by lithium fluoride deposition, DIAM RELAT, 8(10), 1999, pp. 1885-1890
Citations number
13
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
DIAMOND AND RELATED MATERIALS
ISSN journal
09259635 → ACNP
Volume
8
Issue
10
Year of publication
1999
Pages
1885 - 1890
Database
ISI
SICI code
0925-9635(199910)8:10<1885:NEAOPD>2.0.ZU;2-M
Abstract
Lithium fluoride (LiF) was deposited on hydrogenated and oxygenated polycry stalline diamond surfaces. Lowering of the work function induced by the dip ole effect of LiF was clearly observed using UV photoemission spectroscopy and Kelvin probe. The decrease of the work function was sufficiently large so that negative electron affinity was induced. This shows that the LIF ove rlayer on diamond acts as an effective dipole layer to lower the surface wo rk function of the diamond film. (C) 1999 Elsevier Science S.A. All rights reserved.