摘要
KaGd（PO4）2：Tb3＋ phosphors are synthesized by the solid reaction method, and the phases and lu- minescence properties of the obtained phosphors are well characterized. The emission spectra of KaGd（PO4）2：Tb3＋ exhibit the typical emissions of Tb3＋. Concentration quenching of Tb3＋ is not observed in KaGd（PO4）2：Tb3＋, likely because the shortest average distance of Tb3＋-Tb3＋ in KaGd（POn）2：Tb3＋ is adequately long such that energy transfer between Tb3＋-Tb3＋ ions cannot take place effectively. This re- sult indicates that KaTb（P04）2 phosphors have potential application in near ultraviolet （n-UV）-convertible phosphors for white light-emitting diodes.
KaGd（PO4）2：Tb3＋ phosphors are synthesized by the solid reaction method, and the phases and lu- minescence properties of the obtained phosphors are well characterized. The emission spectra of KaGd（PO4）2：Tb3＋ exhibit the typical emissions of Tb3＋. Concentration quenching of Tb3＋ is not observed in KaGd（PO4）2：Tb3＋, likely because the shortest average distance of Tb3＋-Tb3＋ in KaGd（POn）2：Tb3＋ is adequately long such that energy transfer between Tb3＋-Tb3＋ ions cannot take place effectively. This re- sult indicates that KaTb（P04）2 phosphors have potential application in near ultraviolet （n-UV）-convertible phosphors for white light-emitting diodes.
基金
supported by the National Natural Science Foundation of China(Nos.11204113,61265004,and 51272097)
the Specialized Research Fund for the Doctoral Program of Higher Education of China(No.20115314120001)
the Foundation of Natural Science of Yunnan Province(No.2011FB022)
