Journal of Inorganic Materials ›› 2014, Vol. 29 ›› Issue (8): 859-863.DOI: 10.15541/jim20130604

• Orginal Article • Previous Articles     Next Articles

Near-infrared Luminescence Properties of Bi2O3-SiO2 Glasses and Glass Ceramics

LIU Jun-Fang1, SU Liang-Bi3, XU Jun3   

  1. (1. School of Materials Science and Engineering, Tongji University, Shanghai 201804, China; 2. Key Laboratory of Advanced Civil Engineering Materials (Tongji University), Ministry of Education, Shanghai 201804, China; 3. Key Laboratory of Transparent and Opto-Functional Inorganic Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 201800, China)
  • Received:2013-11-18 Revised:2014-01-08 Published:2014-08-20 Online:2014-07-15

Abstract:

Bi2O3-SiO2 glasses and glass ceramics were prepared by melting method. Infrared and VIS luminescence spectra, excitation spectra and fluorescence decay curves were measured. Near infrared (NIR) luminescence of Bi2O3-SiO2 glasses and glass ceramics was observed under 808 nm Laser Diode pumping. When the content of Bi2O3 is low (30mol%, 40mol%, 50mol%), NIR luminescence peak at 1336 nm (or 1300 nm) with full width at half maximum (FWHM) about 200 nm is observed. With the increase of Bi2O3 content, another peak at about 1070 nm with narrow FWHM appears and becomes the main peak, while the FWHM of the NIR emission centered at 1336 nm (or 1300 nm) decreases to only tens of nanometer. Two emission bands have different excitation bands and lifetime. We propose NIR emissions located at 1070 nm and 1336 nm (or 1300 nm) originate from different bismuth centers. The infrared emission peaked at about 1336 nm (or 1300 nm) derives from low valence Bi ions.

Key words: near infrared emission, Bi ions, glass ceramics

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