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Transfer doping of diamond via 2,3‐dichloro‐5,6‐dicyano‐1,4‐benzoquinone (DDQ)
Author(s) -
Goss J. P.,
Eyre R. J.,
Briddon P. R.
Publication year - 2007
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.200776312
Subject(s) - diamond , doping , adsorption , molecule , valence band , valence (chemistry) , ion , surface layer , aqueous solution , layer (electronics) , materials science , chemical physics , conduction band , chemistry , nanotechnology , band gap , optoelectronics , organic chemistry , composite material , physics , quantum mechanics , electron
Hydrogen terminated diamonds exposed to atmosphere typically exhibit surface p‐type conduction, thought to be due to transfer doping with holes in the surface valence band and negatively charged counter‐ions in an adsorbed layer. The effect has been demonstrated with atmospheric contamination forming an aqueous layer, and by C 60 molecules. In this paper we show using first‐principles computational methods that organic layers made up from DDQ molecules may also be a candidate for inducing holes in the diamond surface. The effect appears independent of surface orientation and surface coverage. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)