Luminescence properties of KSr4(BO3)3: Eu2+ for light-emitting diodes

被引：0
作者：
Zhang, Jia [1 ]
Chen, Gui-Bin [1 ]
机构：
[1] School of Physics and Electronic Electrical Engineering, Huaiyin Normal University, Huai'an
来源：
Faguang Xuebao/Chinese Journal of Luminescence | 2014年 / 35卷 / 12期
关键词：
KSr[!sub]4[!/sub](BO[!sub]3[!/sub])[!sub]3[!/sub]: Eu[!sup]2+[!/sup; LEDs; Phosphor;
D O I：
10.3788/fgxb20143512.1432
中图分类号：
学科分类号：
摘要：
KSr4(BO3)3: xEu2+ (KSB: xEu2+) phosphors were synthesized by solid-state reaction method. The phase, morphology, and luminescence properties of the samples were characterized by using XRD, SEM, and photoluminescence spectra. XRD results show that the as-prepared samples are orthorhombic KSr4(BO3)3 single-phase. When x=1.5%, two broad bands are observed from 250 to 550 nm in the excitation spectra, which are attributed to 4f7-4f65d1 transition of Eu2+. Under the excitation of 400 nm, the emission spectrum shows an asymmetric yellow emission band around 560 nm, attributed to 4f65d1-4f7 transition of Eu2+. Because of three Sr crystallographic sites in KSr4(BO3)3 compound, one can infer that the asymmetric emission results from multiple Eu2+ centers by the spectral characteristics. ©, 2014, Faguang Xuebao/Chinese Journal of Luminescence. All right reserved.
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页码：1432 / 1436
页数：4
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