Title
Study on spectroscopic properties and effects of tungsten ions in 2Bi2O3-3GeO2/SiO2 glasses
Author
Junshu Wu, Jinshu Wang, Hongyi Li, Yongli Li, Yucheng Du, Yilong Yang, Xinjian Jia
Year
2017
Journal
Applied Surface Science
Abstract
The 2Bi2O3-3GeO2/SiO2 glass samples have been prepared by the conventional melt quenching technique. XRD patterns, absorption spectra, excitation-emission spectra and Raman measurements were utilized to characterize the synthesized glasses. When substitute SiO2 for GeO2, the 0.4Bi2O3-(0.4-0.1)GeO2-(0.2–0.5)SiO2 glasses exhibit strong emission centered at about 475 nm (under 300 nm excitation), and the decay constants are within the scope of 20–40 ns. W doping into 2Bi2O3-3SiO2 glass could increase the emission intensity of 470 nm, and the W-doped 2Bi2O3-3SiO2 glass has shown another emission at about 433 nm with much shorter decay time (near 10 ns). The 2Bi2O3-3GeO2/SiO2 glass system could be the possible candidate for scintillator in high energy physics applications.
Instrument
FP-6500
Keywords
Fluorescence, Photoluminescence, Materials