摘要
通过控制Dy3+的掺杂浓度,制备出了不同浓度的Eu2+,Dy3+单掺和共掺高硅氧发光玻璃,测试其激发和发射光谱,讨论了Dy3+浓度对Eu2+,Dy3+共掺样品发光性质的影响。结果表明,Eu2+,Dy3+共掺高硅氧发光玻璃中存在Dy3+向Eu2+的无辐射能量传递现象,且Dy3+的引入会使高硅氧发光玻璃中Eu—O的共价作用减弱,造成Eu2+发射峰蓝移;随着Dy3+浓度的增加,Dy3+→Eu2+能量传递增强,Eu2+发光增强;Dy3+含量继续增加,则Dy3+发光出现浓度猝灭,且Dy3+→Eu2+能量传递减弱。
Eu2＋doped,Dy3＋ doped and Eu2＋,Dy3＋ co-doped high silica luminescence glasses were prepared.By controlling the doping concentration of Dy3＋,the different mole ratios of Dy3＋ to Eu2＋ were researched.The effect of Dy3＋ on luminescence properties of Eu2＋,Dy3＋ co-doped high silica glass was studied by means of excitation and emission spectra.The results show that nonradioactive energy transfer from Dy3＋ to Eu2＋ occurred in Eu2＋,Dy3＋ co-doped high silica glass.By co-doping with Dy3＋,the covalent strength of the Eu-O bond weakened,which causes blue shift of the emission peak of Eu2＋.With the increasing concentration of Dy3＋,the energy transfer process from Dy3＋ to Eu2＋ is enhanced,and the emission intensity of Eu2＋ increase.When the concentration of Dy3＋ continued increase,the luminescence of Dy3＋ decrease because of the effect of concentration quenching and the impaired energy transfer process from Dy3＋ to Eu2＋.
出处
《发光学报》
EI
CAS
CSCD
北大核心
2012年第11期1161-1165,共5页
Chinese Journal of Luminescence
基金
国家自然科学基金(61007030)
中央高校(CDJZR10120001)资助项目
