State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People's Republic of China.
J Fluoresc. 2011 Jul;21(4):1461-6. doi: 10.1007/s10895-010-0831-x. Epub 2011 Jan 29.
The room-temperature luminescent emission characteristics of Sr(2)CeO(4):M(+) and Sr(2)CeO(4):Eu(3+),M(+) (M(+) = Li(+), Na(+), K(+)) have been investigated under UV excitation. By introducing appropriate alkali metal cations dopants (Li(+), Na(+), K(+)) into the crystalline lattice, not only emission color of the blue-white-emitting Sr(2)CeO(4) doped with low Eu(3+) content can be tuned to green, but also the red emission intensity of Sr(2)CeO(4) doped with high Eu(3+) concentration is strengthened significantly. The relevant mechanisms have been elucidated in detail.
研究了 Sr(2)CeO(4):M(+) 和 Sr(2)CeO(4):Eu(3+),M(+)（M(+) = Li(+)、Na(+)、K(+)）在紫外光激发下的室温发光发射特性。通过在晶体晶格中引入适当的碱金属阳离子掺杂剂（Li(+)、Na(+)、K(+)），不仅可以将低 Eu(3+)含量掺杂的蓝白色 Sr(2)CeO(4)的发射颜色调谐到绿色，而且还可以显著增强高 Eu(3+)浓度掺杂 Sr(2)CeO(4)的红色发射强度。详细阐明了相关机制。
