Color-Tunable and White Luminescence Properties via Energy Transfer in Single-Phase KNaCa<sub>2</sub>(PO<sub>4</sub>)<sub>2</sub>:A (A = Ce<sup>3+</sup>, Eu<sup>2+</sup>, Tb<sup>3+</sup>, Mn<sup>2+</sup>, Sm<sup>3+</sup>) Phosphors
作者:Dongling Geng、Mengmeng Shang、Yang Zhang、Hongzhou Lian、Jun Lin
DOI:10.1021/ic402305x
日期:2013.12.2
for Ce3+-, Tb3+-, and Sm3+-doped KNCP samples. The energy transfers from Ce3+ to Tb3+ and Mn2+ ions as well as Eu2+ to Tb3+ and Mn2+ have been validated. The emission colors of KNCP:Ce3+/Eu2+, Tb3+/Mn2+, Na+ samples can be adjusted by energy transfer process and changing the Tb3+/Mn2+ concentration. More importantly, white light emission in KNCP:Eu2+, Mn2+ system has been obtained. The KNCP:Tb3+, Na+
通过Pechini制备了一系列基于KNaCa 2(PO 4)2(KNCP):A的单相荧光粉(A = Ce 3+,Eu 2 +,Tb 3+,Mn 2 +,Sm 3+)。型溶胶凝胶法。研究了Ce 3+ -,Eu 2 + -,Tb 3+ -,Mn 2 + -和Sm 3+活化的KNCP荧光粉的光致发光(PL)和阴极发光(CL)特性。对于A单独掺杂的KNCP样品,它们表现出A活化剂的特征发射。Na +离子在Li +中表现出最佳的电荷补偿结果Ce 3+ -,Tb 3+ -和Sm 3+掺杂的KNCP样品中的,Na +和K +离子。从Ce 3+到Tb 3+和Mn 2+的能量转移以及Eu 2+到Tb 3+和Mn 2+的能量转移已得到验证。可以通过能量转移过程和改变Tb 3+ / Mn 2+的浓度来调节KNCP:Ce 3+ / Eu 2 +,Tb 3+ / Mn 2 +,Na +样品的发光颜色。更重要的是,K