Luminescence properties of the Eu-doped porous glass and spontaneous reduction of Eu3+ to Eu2+

The effect of B2O3 on the luminescent properties of Eu ion-doped aluminoborosilicate glasses

“…4 presents the EPR spectra of the samples with varying B 2 O 3 concentrations. The electron spin S and nuclear spin I of Eu 2+ are 7/2 and 5/2, respectively, and the resonance signal at g values of 6.0, 4.7 and 2.8 can be found in the samples [4,8]. As shown in Fig.…”

“…Thus, the breadth narrowing implies an increasing number of non-bridging oxygen existing in the glass network structure. 4 ] unit. Thus, the vibration absorption intensity of the band started to decrease.…”

“…[1][2][3]. Blue emission region of Eu 2+ -doped materials has been studied extensively [4][5][6][7][8]. Since Eu 2 O 3 is the most typical starting compound to prepare Eu 2+ doped fluorescent materials, Eu 3+ ions must be reduced to obtain Eu 2+ during the synthesis.…”

Theoretical model of rare earth ions doping amount in high silica luminescence glass

“…The high silica luminescence glass sintered by rare earth (RE) ions doped porous glass is a kind of potential luminescent materials for White LEDs, because of its excellent chemical stability and fine mechanical properties [1][2][3][4] . It can also be used to prepare special optical fibers, on account of its high content of SiO 2 .…”

“…Researchers studied the optimization of rare earth ions doping amount emphatically by the experimental method, such as high silica glasses doped by Ce 3+ [7] , Eu 2+ [8,9] , Tb 3+ [10] , Eu 3+ [11] , Sm 3+ , and so on. Without quantitative analysis theory of doping amount, the optimal doping amount of rare earth ions can be obtained by a series of experiments, such as adjustments of process parameters, preparations of glass samples, testes of emission spectra.…”