Cr-N codoping approach is studied using both cluster-assembled and epitaxial TiO2 films. simultaneously injecting the two atomic species substantially modifies the TiO2 band gap, reducing it by more than 1 eV. XPS, XAS and optical spectroscopy characterizations confirm that the atoms are succesfully embedded inside the system and that the band gap is reduced. Cr-N coupling is confirmed in the case of epitaxial codoped Titania films.
GROWTH AND CHARACTERIZATION OF EPITAXIAL AND CLUSTER-ASSEMBLED CR-N CODOPED TIO2 FILMS WITH ENHANCED VISIBLE-LIGHT PHOTOACTIVITY / M. Chiodi ; tutore: L. Gavioli ; coordinatore: M. Bersanelli. Università degli Studi di Milano, 2010 Dec 16. 23. ciclo, Anno Accademico 2010. [10.13130/chiodi-mirco_phd2010-12-16].
GROWTH AND CHARACTERIZATION OF EPITAXIAL AND CLUSTER-ASSEMBLED CR-N CODOPED TIO2 FILMS WITH ENHANCED VISIBLE-LIGHT PHOTOACTIVITY
M. Chiodi
2010
Abstract
Cr-N codoping approach is studied using both cluster-assembled and epitaxial TiO2 films. simultaneously injecting the two atomic species substantially modifies the TiO2 band gap, reducing it by more than 1 eV. XPS, XAS and optical spectroscopy characterizations confirm that the atoms are succesfully embedded inside the system and that the band gap is reduced. Cr-N coupling is confirmed in the case of epitaxial codoped Titania films.
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