Spectroscopic properties of Er3+/Yb3+co-doped fluoro bismuth borate glasses for up-conversion luminescence

In this study, 24ZnF2-(47-x)B2O3-18Bi2O3-10ZnO-xEr2O3-1Yb2O3 (FBZEY) fluorine bismuth borate glass was prepared by a high-temperature melting method. XRD analysis showed that all glass samples were amorphous. The differential thermal analysis determined that Delta T of the glass was 107 degrees C, and it had good thermal stability. The role of doped rare earth ions in the matrix structure was studied using infrared spectroscopy. The near -infrared spectrum of the glass samples shows a wider peak corresponding to the 4I13/2 -> 4I15/2 transition at 1530 nm at 980 nm excitation. When Er3+/Yb3+ is simultaneously located on 4I11/2, Yb3+ transfers energy to Er3+, converts it to 4F7/2 and returns itself to the ground state 4I15/2, thus greatly improving the optical properties of fluorescent glasses. By up-conversion spectra, it can be found that high energy emission photons can be ob-tained by using low energy excitation sources. Fluorescence attenuation analysis shows that the fluorescence lifetimes of FBZE1Y, FBZE3Y and FBZE5Y were 0.36 ms, 0.59 ms and 0.67 ms, respectively. The results show that the fluorine bismuth zinc glass sample has potential application value for enhancing up-conversion optical de-vices and amplifiers.

Automated summary

24ZnF2-(47-x)B2O3-18Bi2O3-10ZnO-xEr2O3-1Yb2O3 (FBZEY) fluorine bismuth borate glass with good thermal stability was prepared. The effect of doped rare earth ions on the glass structure was studied using infrared spectroscopy. High energy emission photons can be obtained by low energy excitation sources. Fluorescence decay analysis showed that the fluorescence lifetime increased with the concentration of doped rare earth ions.