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Fluorescent Nanodiamonds: Effect of Surface Termination

Published online by Cambridge University Press:  31 January 2011

Irena Kratochvílová ,
Andrew Taylor ,
Alexander Kovalenko ,
Frantisek Fendrych ,
Vladimira Řezáčová ,
Vaclav Petrák ,
Stanislav Zalis ,
Jakub Šebera  and
Milos Nesládek
Irena Kratochvílová
Affiliation:
krat@fzu.cz, Institute of Physics of the AS CR, v.v.i., Department of Dielectrics, Praha, Czech Republic
Andrew Taylor
Affiliation:
taylor@fzu.cz, Institute of Physics, Academy of Sciences Czech Republic v.v.i, Prague, Czech Republic
Alexander Kovalenko
Affiliation:
kovalen@fzu.cz, Institute of Physics, Academy of Sciences Czech Republic v.v.i, Prague, Czech Republic
Frantisek Fendrych
Affiliation:
fendrych@fzu.cz, Institute of Physics, Academy of Sciences Czech Republic v.v.i, Prague, Czech Republic
Vladimira Řezáčová
Affiliation:
rezacova@fzu.cz, Institute of Physics, Academy of Sciences Czech Republic v.v.i, Prague, Czech Republic
Vaclav Petrák
Affiliation:
petrak@fzu.cz, Institute of Physics, Academy of Sciences Czech Republic v.v.i, Prague, Czech Republic
Stanislav Zalis
Affiliation:
zalis@jh-inst.cas.cz, Heyrovský Institute of Physical Chemistry, AS CR, Prague, Czech Republic
Jakub Šebera
Affiliation:
sebera@jh-inst.cas.cz, Heyrovský Institute of Physical Chemistry, AS CR, Prague, Czech Republic
Milos Nesládek
Affiliation:
milos.nesladek@uhasselt.be, Hasselt University, Diepenbeek, Belgium
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Abstract

It has been reported that physico-chemical properties of diamond surfaces are closely related to the surface chemisorbed species on the surface. Hydrogen chemisorption on a chemical vapor deposition grown diamond surface is well-known to be important for stabilizing diamond surface structures with sp3 hybridization. It has been suggested that an H-chemisorbed structure is necessary to provide a negative electron affinity condition on the diamond surfaces. Negative electron affinity condition could change to a positive electron affinity by oxidation of the H-chemisorbed diamond surfaces. Oxidized diamond surfaces usually show characteristics completely different from those of the H-chemisorbed diamond surfaces. The unique electron affinity condition, or the surface potential, is strongly related to the chemisorbed species on diamond surfaces. The relationship between the surface chemisorption structure and the surface electrical properties, such as the surface potential of the diamond, has been modelled using DFT based calculations.

Keywords

diamondluminescenceelectronic structure
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1203: Symposium J – Diamond Electronics and Bioelectronics-Fundamentals to Applications III , 2009 , 1203-J03-05
Copyright
Copyright © Materials Research Society 2010

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