State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Wuhan 430074, China.
Spectrochim Acta A Mol Biomol Spectrosc. 2012 Feb 15;87:228-31. doi: 10.1016/j.saa.2011.11.043. Epub 2011 Nov 26.
A novel red-emitting phosphor, SrB(2)O(4):Eu(3+), was synthesized by high temperature solid-state reaction and its photoluminescence properties were studied. The emission spectrum consists of four major emission bands. The emission peaks are located at 593, 612, 650 and 703nm, corresponding to the (5)D(0)→(7)F(1), (5)D(0)→(7)F(2), (5)D(0)→(7)F(3) and (5)D(0)→(7)F(4) typical transitions of Eu(3+), respectively. The effects of Eu(3+) doping content and charge compensators (Li(+), Na(+), K(+)) on photoluminescence of SrB(2)O(4):Eu(3+) phosphor were studied. The results show that the emission intensity can be affected by above factors and Na(+) is the optimal charge compensator for SrB(2)O(4):Eu(3+). The photoluminescence of NaSrB(2)O(4):Eu(3+) was compared with that of Y(2)O(2)S:Eu(3+). It implies that SrB(2)O(4):Eu(3+) is a good candidate as a red-emitting phosphor pumped by near-ultraviolet (NUV) InGaN chip for fabricating white light-emitting diodes (WLEDs).
一种新型红色荧光粉 SrB(2)O(4):Eu(3+) 通过高温固相反应合成，并研究了其光致发光性能。发射光谱由四个主要发射带组成。发射峰位于 593、612、650 和 703nm，分别对应于 Eu(3+)的 (5)D(0)→(7)F(1)、(5)D(0)→(7)F(2)、(5)D(0)→(7)F(3) 和 (5)D(0)→(7)F(4) 典型跃迁。研究了 Eu(3+)掺杂浓度和电荷补偿剂（Li(+)、Na(+)、K(+)）对 SrB(2)O(4):Eu(3+)荧光粉光致发光的影响。结果表明，上述因素会影响发射强度，Na(+)是 SrB(2)O(4):Eu(3+)的最佳电荷补偿剂。比较了 NaSrB(2)O(4):Eu(3+)的光致发光与 Y(2)O(2)S:Eu(3+)的光致发光。这表明 SrB(2)O(4):Eu(3+)是一种很有前途的近紫外（NUV）InGaN 芯片激发的红色发光材料，可用于制备白光发光二极管（WLEDs）。
