Abstract
Bi2O3-SiO2 glasses and glass ceramics were prepared by melting method and annealing treatment. NIR emission spectra, excitation spectra and fluorescence decay curves were measured. The main NIR luminescent peak and the FWHM of the NIR luminescent between Bi2O3-SiO2 glasses and glass ceramics are different. NIR luminescence peak at 1336 (1300) nm with FWHM about 200nm is observed in Bi2O3-SiO2 glasses samples, while the main luminescent peak in Bi2O3-SiO2 glass ceramics locates at about 1069nm with narrow FWHM. These two emission peaks have different excitation bands and lifetimes. We propose that NIR emissions located at 1069nm and 1336 (1300) nm derive from Bi2+ and low valence Bi ions, respectively.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
