RT Journal Article
T1 Luminescence and Raman study of α-Bi_2O_3 ceramics
A1 Piqueras De Noriega, Francisco Javier
A1 Vila Santos, María
A1 Díaz-Guerra Viejo, Carlos
AB Cathodoluminescence in the scanning electron microscope and photoluminescence in a confocal microscope have been used to investigate the luminescence properties of the stable monoclinic α-phase of Bi_2O_3. Powders of this oxide have been sintered at temperatures of 500 °C and 750 °C in air or in nitrogen atmospheres. Spectra of the starting powder and of the samples treated at 500 °C show luminescence bands at 1.50 eV and 1.95 eV as well as a band at 2.1 eV, more prominent in nitrogen treated samples. Sintering at 750 °C leads to quenching of the 1.50 eV infrared emission and the formation of a broad band with emission above 3 eV. The evolution of Raman bands with the sintering treatments has also been investigated.
PB Elsevier Science SA
SN 0254-0584
YR 2012
FD 2012-03-15
LK https://hdl.handle.net/20.500.14352/44026
UL https://hdl.handle.net/20.500.14352/44026
LA eng
NO ©2012 Elsevier B.V.This work has been supported by MICINN through projects MAT2009-07882 and CSD2009-0013 and by BSCH-UCM (Project GR35-10A-910146).
NO MICINN (Ministerio de Ciencia e Innovación, España)
NO BSCH-UCM
DS Docta Complutense
RD 7 abr 2025