Sn2+/Sm3+掺杂硼酸盐玻璃的荧光特性

Abstract The increasing performance demands on white-light-emitting diodes (white-LEDs) necessitate the devel opment of novel luminescent materials.Here a new type of luminescent borate glass for white-LEDs applications was fabricated based on Sn 2+ single doping and Sn 2+ /Sm 3+ co-doping.The obtained glasses exhibit favorable lumines cence properties.Under ultraviolet excitation the Sn 2+ singly doped glass shows a broad and tunable blue emission band spanning from 300 nm to 500 nm.Co-doping Sm 3+ which provides characteristic red-orange emission enables efficient energy transfer from Sn 2+ to Sm 3+ ions (with a transfer efficiency of 41. 71% in 2% Sm 3+ co-doped glass sam ple) allowing for effective color tuning from blue to white light.Furthermore temperature-dependent photolumines cence measurements confirm the excellent thermal recoverability of these luminescent glasses highlighting their promising potential for application in high-performance white-LEDs.Keywords Sn 2+ luminescent properties Sm 3+ energy transfer white-LEDs 1