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Luminescence and Raman study of α-Bi_2O_3 ceramics

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Piqueras de Noriega, Javier and Vila Santos, María and Díaz-Guerra Viejo, Carlos (2012) Luminescence and Raman study of α-Bi_2O_3 ceramics. Materials Chemistry and Physics, 133 (1). pp. 559-564. ISSN 0254-0584

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Official URL: http://dx.doi.org/10.1016/j.matchemphys.2012.01.088


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Abstract

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.


Item Type:Article
Additional Information:

©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).

Uncontrolled Keywords:Trioxide Thin-Films, Bismuth Oxide, Optical-Properties, Spectra, Phase, Bi_2O_3, Bismuthsesquioxide, Evaporation
Subjects:Sciences > Physics > Materials
ID Code:23632
Deposited On:22 Nov 2013 08:16
Last Modified:12 May 2016 15:35

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