The photoluminescence of rutile and anatase TiO2 has been investigated in the range of 360–890 nm at several temperatures. An unexpected intense near-infrared ~1.53 eV! photoluminescence band was recorded for both phases. At low temperatures, the resulting bands form a substructure of equally spaced peaks irrespective of the phase. The spectra were interpreted in the framework of the single-configuration-coordinate model as the phonon-replica effect, originating from ionization of oxygen vacancies.

Near-infrared photoluminescence in titania: Evidence for phonon-replica effect

MONTONCELLO, Federico;CAROTTA, Maria Cristina;FERRONI, Matteo;GIBERTI, Alessio;GUIDI, Vincenzo;MALAGU', Cesare;MARTINELLI, Giuliano;
2003

Abstract

The photoluminescence of rutile and anatase TiO2 has been investigated in the range of 360–890 nm at several temperatures. An unexpected intense near-infrared ~1.53 eV! photoluminescence band was recorded for both phases. At low temperatures, the resulting bands form a substructure of equally spaced peaks irrespective of the phase. The spectra were interpreted in the framework of the single-configuration-coordinate model as the phonon-replica effect, originating from ionization of oxygen vacancies.
2003
Montoncello, Federico; Carotta, Maria Cristina; Cavicchi, B; Ferroni, Matteo; Giberti, Alessio; Guidi, Vincenzo; Malagu', Cesare; Martinelli, Giuliano; Meinardi, F.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11392/1204949
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