Wang Lei, Zhang Jia-Hua, Cui Cai-E, Huang Ping
College of Physics and Optoelectronics, Taiyuan University of Technology, Taiyuan 030024, China.
Guang Pu Xue Yu Guang Pu Fen Xi. 2013 May;33(5):1185-8.
Doubly doped YAG:Ce3+, Pb2+ phosphor was obtained by doping YAG:Ce3+ phosphor with PbO. Compared with the emission spectra of YAG:Ce3+ phosphor without PbO, the Ce3+ emission band of YAG:Ce3+, Pb2+ shifts to longet wave, which can enhance the red component of spectrum. Meanwhile, the intensity of Ce3+ emission is increased by 10% when the concentration of PbO is 5%, SEM image indicates that PbO may act as a flux. Temperature-dependent emission spectra of YAG: Ce3+, Pb2+ phosphor show a better thermal quenching characteristics than YAG:Ce3+ phosphor.
通过用PbO掺杂YAG:Ce³⁺荧光粉获得了双掺杂YAG:Ce³⁺,Pb²⁺荧光粉。与未掺杂PbO的YAG:Ce³⁺荧光粉的发射光谱相比，YAG:Ce³⁺,Pb²⁺的Ce³⁺发射带向长波方向移动，这可以增强光谱的红色成分。同时，当PbO浓度为5%时，Ce³⁺发射强度增加了10%，扫描电子显微镜图像表明PbO可能起到助熔剂的作用。YAG:Ce³⁺,Pb²⁺荧光粉的温度依赖发射光谱显示出比YAG:Ce³⁺荧光粉更好的热猝灭特性。
