Photoluminescence and Energy Transfer in Sn2+, Tb3+ Co-Activated P2O5-Li2O-ZnO Glasses with Tailored Emission

Currently, emission mechanisms of ns 2 -type Sn 2+ emission centers doped amorphous glasses have not been entirely identified, which possess comparable emission to those of crystal phosphors such as MgWO 4 . In this letter, photoluminescence properties of Sn 2+ , Tb 3+ single- and co-activated low-melting 46P 2 O 5 -38Li 2 O-16ZnO (PLZ) glasses, and the energy-transfer (ET) process of Sn 2+ →Tb 3+ were systematically demonstrated by absorption, excitation, emission spectra, and decay lifetimes. Upon 288 nm light excitation, Sn 2+ -, Tb 3+ -codoped glasses exhibit broad blue emission at 387 nm (from Sn 2+ ) and strong green emission peaked at 545 nm (from Tb 3+ ). Tuning the doping content of Tb 3+ can generate tailored emission color from purplish blue to green region. Our results promote the understanding of the interplay between Sn 2+ and Tb 3+ in amorphous hosts.