http://www.cnr.it/ontology/cnr/individuo/prodotto/ID122

Phosphorous-oxygen hole centers in phosphosilicate glass films (Articolo in rivista)

Type

Articolo in rivista (Classe)
Prodotto della ricerca (Classe)

Label

Phosphorous-oxygen hole centers in phosphosilicate glass films (Articolo in rivista) (literal)

Anno

2006-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

10.1103/PhysRevB.74.134102 (literal)

Alternative label

Fanciulli, M; Bonera, E; Nokhrin, S; Pacchioni, G (2006)
Phosphorous-oxygen hole centers in phosphosilicate glass films
in Physical review. B, Condensed matter and materials physics; American Physical Society (APS), College Pk (Stati Uniti d'America)
(literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

Fanciulli, M; Bonera, E; Nokhrin, S; Pacchioni, G (literal)

Pagina inizio

134102-1 (literal)

Pagina fine

134102-10 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url

http://link.aps.org/doi/10.1103/PhysRevB.74.134102 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

74 (literal)

Rivista

Physical review. B, Condensed matter and materials physics (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali

10 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo

13 (literal)

Note

ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

CNR, INFM, Lab Nazl MDM, I-20041 Agrate Brianza, MI, Italy; Univ Milan, Dipartimento Sci Mat, I-20125 Milan, Italy (literal)

Titolo

Phosphorous-oxygen hole centers in phosphosilicate glass films (literal)

Abstract

Phosphosilicate glass films produced by subatmospheric pressure chemical vapor deposition with different phosphorus concentrations have been investigated by ultraviolet Raman spectroscopy and electron paramagnetic resonance (EPR) spectroscopy. The behavior and the attribution of the main Raman band at 1326(2) cm(-1) and the broad feature at about 1150 cm(-1) are discussed in detail. After room temperature x-ray irradiation, EPR spectra reveal resonance signals attributed to a stable and metastable variant of the phosphorous oxygen hole centers (POHCs and POHCm respectively). Density functional theory calculations have been performed to determine the structure, charge and spin distribution, hyperfine coupling constants, and g values of POHCs and POHCm and the structural and vibrational properties of their diamagnetic precursors. The comparison between the experimental data and the theoretical predictions supports the original tentative assignment proposed by Griscom regarding the structure of the paramagnetic centers and of their diamagnetic precursors. POHCs is a phosphorous-oxygen hole center characterized by the presence of two P - O terminal bonds, [(O -)(2)P(= O)(2)(center dot)](0); POHCm contains only one P - O terminal bond, [(O -)(3)P - O-center dot](+). These centers result from the trapping of a hole by [(O -)(2)P(= O)(2)](-) and [(O -)(3)P = O](0), respectively. While the EPR signal of POHCm overwhelms the one of POHCm, the Raman main band is related to the precursor of POHCm. (literal)

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