Photoluminescence properties excellent thermal stability and energy transfer in Ce3+ and Tb3+ co-doped Sr3Gd2（BO3）4 phosphors

doi:10.1016/j.jlumin.2021.118594

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	Photoluminescence properties excellent thermal stability and energy transfer in Ce3+ and Tb3+ co-doped Sr3Gd2（BO3）4 phosphors
	X. Fan; X. Sun; C. Liu; W. Tian; M. Li; Y. Luo and C. Wu
	2022
发表期刊	Journal of Luminescence
ISSN	222313
卷号	242
摘要	Sr3Gd2(BO3)4: Ce3+, Sr3Gd2(BO3)4: Tb3+ and Sr3Gd2(BO3)4: Ce3+, Tb3+ phosphors were synthesized through conventional high temperature solid state reaction method. Phase purity, crystal structure, photoluminescence properties, and lifetime of the samples were analyzed in detailed. Sr3Gd2(BO3)4: Ce3+ showed a bright blue broad emission band, which was attributed to 4f 5d transitions of the Ce3+ ions, and it exhibited two broad excitation ranged from 200 nm to 400 nm. For all Sr3Gd2(BO3)4: Tb3+ samples, under ultraviolet excitation bands of 240 nm, four emissions peaked at 490 nm, 544 nm, 585 nm and 623 nm appeared, due to the 5D4 7FJ (J = 6, 5, 4, 3) transitions of Tb3+ ions. For the Sr3Gd2(BO3)4: Ce3+, Tb3+ phosphors, the lifetime of the samples were analyzed, which showed the presence of energy transfer between the Ce3+ and Tb3+. The energy transfer efficiency from Ce3+ ions to Tb3+ ions reached 98.37%. When the temperature reached 443 K, the luminescence intensity reached 88% of the initial value. Finally, a white LED was fabricated by using a 365 nm near ultraviolet LED chip combined with BaMgAl10O17: Eu2+ (blue), Sr3Gd0.91(BO3)4: 0.09Ce3+, 1.0 Tb3+ (green), and CaAlSiN3: Eu2+ (red) phosphors. The color coordinates was (0.40, 0.42); correlated color temperature was 3721 K; color rendering index was 91.1. The results showed that the Sr3Gd2(BO3)4: Ce3+, Tb3+ green phosphors were suitable for white LEDs. 2021 Elsevier B.V.
DOI	10.1016/j.jlumin.2021.118594
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文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/67308
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	X. Fan,X. Sun,C. Liu,等. Photoluminescence properties excellent thermal stability and energy transfer in Ce3+ and Tb3+ co-doped Sr3Gd2（BO3）4 phosphors[J]. Journal of Luminescence,2022,242.
APA	X. Fan,X. Sun,C. Liu,W. Tian,M. Li,&Y. Luo and C. Wu.(2022).Photoluminescence properties excellent thermal stability and energy transfer in Ce3+ and Tb3+ co-doped Sr3Gd2（BO3）4 phosphors.Journal of Luminescence,242.
MLA	X. Fan,et al."Photoluminescence properties excellent thermal stability and energy transfer in Ce3+ and Tb3+ co-doped Sr3Gd2（BO3）4 phosphors".Journal of Luminescence 242(2022).

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