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一种新型单相橙红色发光荧光粉CaLa(PO₄):Sm的晶体结构和发光性能

Crystal structure and luminescence properties of a novel single-phase orange-red emitting phosphor CaLa (PO):Sm.

作者信息

Ma Bin, Ma Xiaoqin, Xu Tonghui, Su Ke, Zhang Qianxin

机构信息

Qinghai Provincial Key Laboratory of New Light Alloys, Qinghai Provincial Engineering Research Center of High Performance Light Metal Alloys and Forming, Qinghai University Xining 810016 P. R. China

Analytical Instrumentation Center, Qinghai Normal University Xining 810016 P. R. China.

出版信息

RSC Adv. 2018 Apr 17;8(26):14164-14170. doi: 10.1039/c8ra01689e.

DOI:10.1039/c8ra01689e
PMID:35540751
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9079899/
Abstract

CaLa (PO):Sm phosphors (0.01 < < 0.25) were synthesized high temperature solid-state reaction. Their properties including crystal structure, decay performance, thermal stability and photoluminescence were examined in detail. Phase analysis indicated that the phosphors crystallized in a rhombohedral structure, and the emission spectra of the phosphors consisted of four peaks centered around 570, 607, 653, and 714 nm, attributed to Sm ions transitions G → H ( = 5/2, 7/2, 9/2, and 11/2, respectively). The optimal Sm doping content was 0.12 mol and the CaLa(PO):Sm phosphor also exhibited better thermal stability compared to other phosphors. In addition, the mechanism behind the energy transfer between Sm ions was determined to be dipole-dipole interactions as described by Dexter theory. The results indicated that as orange-red phosphors, CaLa (PO):Sm phosphors were promising candidates for being integrated into white light emitting diodes.

摘要

通过高温固相反应合成了CaLa(PO₄)₂:Sm荧光粉（0.01＜x＜0.25）。详细研究了它们的晶体结构、衰减性能、热稳定性和光致发光等性质。相分析表明，荧光粉结晶为菱面体结构，荧光粉的发射光谱由四个峰组成，中心波长分别约为570、607、653和714nm，这归因于Sm离子从G能级到H能级的跃迁（分别对应J = 5/2、7/2、9/2和11/2）。最佳的Sm掺杂含量为0.12mol，并且CaLa(PO₄)₂:Sm荧光粉与其他荧光粉相比还表现出更好的热稳定性。此外，根据德克斯特理论确定Sm离子之间的能量转移机制为偶极 - 偶极相互作用。结果表明，作为橙红色荧光粉，CaLa(PO₄)₂:Sm荧光粉有望被集成到白光发光二极管中。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b4b1/9079899/b90f7cf4d544/c8ra01689e-f9.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b4b1/9079899/bce6cedb424f/c8ra01689e-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b4b1/9079899/8721fd841a79/c8ra01689e-f2.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b4b1/9079899/13280bdbc5ef/c8ra01689e-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b4b1/9079899/08e8f4c9d4ec/c8ra01689e-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b4b1/9079899/d6481b517b04/c8ra01689e-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b4b1/9079899/ee00f4cf72fa/c8ra01689e-f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b4b1/9079899/8ae66e92a52d/c8ra01689e-f8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b4b1/9079899/b90f7cf4d544/c8ra01689e-f9.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b4b1/9079899/bce6cedb424f/c8ra01689e-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b4b1/9079899/8721fd841a79/c8ra01689e-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b4b1/9079899/a295ab9c234e/c8ra01689e-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b4b1/9079899/13280bdbc5ef/c8ra01689e-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b4b1/9079899/08e8f4c9d4ec/c8ra01689e-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b4b1/9079899/d6481b517b04/c8ra01689e-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b4b1/9079899/ee00f4cf72fa/c8ra01689e-f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b4b1/9079899/8ae66e92a52d/c8ra01689e-f8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b4b1/9079899/b90f7cf4d544/c8ra01689e-f9.jpg

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本文引用的文献

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Synthesis and luminescence properties of BaLu(PO):Sm phosphor for white light-emitting diodes.
Opt Express. 2017 Apr 17;25(8):A391-A401. doi: 10.1364/OE.25.00A391.
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Ce-Doped garnet phosphors: composition modification, luminescence properties and applications.掺铈石榴石荧光粉：组成改性、发光性能与应用。
Chem Soc Rev. 2017 Jan 3;46(1):275-299. doi: 10.1039/c6cs00551a.
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Na2CaSn2Ge3O12: a novel host lattice for Sm3+-doped long-persistent phosphorescence materials emitting reddish orange light.Na2CaSn2Ge3O12: 一种新型基质晶格，用于 Sm3+掺杂的长余辉红色橙色发光材料。
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