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Effects of Sm Co-doping on Luminescent Properties of Sr4Al14O25:M (M=Mn4+, Cr3+) Phosphors
Yu-dong Xu*1, Xu-dong Peng1, Lei Wang*1, Min Shi1, Yuan Zhang1, Quan Wang1, San Qi1, Ning Ding2
1.School of Materials Science and Engineering, Hefei University of Technology, Hefei 230009, China;2.Bengbu Yucheng New Materials Science and Technology Ltd. Co., Bengbu 233000, China
Abstract:
The Sr4Al14O25:M and doped Sr4Al14O25:M+Sm3+ (M=Mn4+, Cr3+) phosphors were syn-thesized by a solid-state reaction method and their luminescent properties were investi-gated. The results showed that the co-doping of Sm ions did not change the positions of excitation band and emission band but signi cantly improved the luminescent properties of Sr4Al14O25:Cr3+ phosphors; whereas, the emission intensity of Sr4Al14O25:Mn4+ was re-dueced remarkably when Sm ions were co-doped. In addtion, a radiative-form energy transfer from Sm3+ to Cr3+ was observed for the first time in the Cr, Sm co-doped Sr4Al14O25 phos-phors. The results indicated that Sm ions could signi cantly improve the emission intensity of Sr4Al14O25:Cr3+, making the Sm3+co-doped Sr4Al14O25:Cr3+ phosphor a promising can-didate for the applications in display and solid state lightening.
Key words:  Phosphor, Co-doping, Strontium aluminates, Energy transfer
FundProject:
Sm共掺对Sr4Al14O25:M (M=Mn4+, Cr3+)荧光粉发光性能的影响
许育东*1, 彭旭东1, 王雷*1, 石敏1, 张原1, 汪泉1, 齐三1, 丁宁2
1.合肥工业大学材料科学与工程学院,合肥230009;2.蚌埠钰诚新材料科技股份有限公司,蚌埠 233000
摘要:
用固相反应法合成了Sr4Al14O25:M和Sr4Al14O25:(M+Sm3+)(M=Mn4+, Cr3+)荧光粉, 研究了其发光性能.Sm的共掺并没有改变Sr4Al14O25:Cr3+激发带和发射带的位置, 但是显著提高了材料的发光性能;Sm共掺Sr4Al14O25:Mn4+反而降低了发光强度. 对于Cr3+, Sm3+共掺的Sr4Al14O25荧光粉, 呈现了从Sm3+到Cr3+ 的辐射形式的能量传递过程,说明了Sm的共掺对于Sr4Al14O25:Cr3+荧光粉的发光强度提高的原因.
关键词:  荧光粉,共掺,铝酸锶,能量传递
DOI:10.1063/1674-0068/28/cjcp1504071
分类号: