The properties of photoluminescence (PL) in nitrogenated and non-nitrogenated amorphous carbon films are discussed. Emphasis is given to nitrogenated films and their peculiarities. The role of oxygen, through structural relaxation, and of nitrogen, due to structural relaxation and lone pairs, is discussed. A general correlation between the density of diamagnetic and paramagnetic ‘defects’ of different extensions and the quantum efficiency of PL is found. It is also shown that a-CN films can be divided in two categories, following their local structure and, in particular, the presence of voids, that lead to large scale oxygen contamination and stress release.

Density and capture radius of ‘defects’: quenching of the luminescent states in non-nitrogenated and nitrogenated amorphous carbon thin films

LAURENTI, Enzo
2002-01-01

Abstract

The properties of photoluminescence (PL) in nitrogenated and non-nitrogenated amorphous carbon films are discussed. Emphasis is given to nitrogenated films and their peculiarities. The role of oxygen, through structural relaxation, and of nitrogen, due to structural relaxation and lone pairs, is discussed. A general correlation between the density of diamagnetic and paramagnetic ‘defects’ of different extensions and the quantum efficiency of PL is found. It is also shown that a-CN films can be divided in two categories, following their local structure and, in particular, the presence of voids, that lead to large scale oxygen contamination and stress release.
2002
14
13231
13240
Amorfous carbon; photoluminescence
G. Fanchini; S.C. Ray; A. Tagliaferro; E. Laurenti
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/46521
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