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GdSrAlO:Tb,Eu荧光粉中从绿色到红色的可调发射：高效能量转移

Tunable emission from green to red in the GdSrAlO:Tb,Eu phosphor efficient energy transfer.

作者信息

Zhang Yu, Zhang Xuejie, Zhang Haoran, Zheng Lingling, Zeng Yuan, Lin Yu, Liu Yingliang, Lei Bingfu

机构信息

Guangdong Provincial Engineering Technology Research Center for Optical Agricultural, College of Materials and Energy, South China Agriculture University Guangzhou 510642 P. R. China

出版信息

RSC Adv. 2018 Jan 17;8(7):3530-3535. doi: 10.1039/c7ra12260h. eCollection 2018 Jan 16.

DOI:10.1039/c7ra12260h
PMID:35542931
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9077678/
Abstract

Herein, a series of GdSrAlO:Tb,Eu phosphors were successfully synthesized through a high temperature solid-state reaction, and their crystal structures as well as photoluminescence properties were investigated in detail. Compared to the intense emission of D → F or D → F transition of Eu, another strong emission corresponding to D → F was observed. Concentration quenching is not obvious in Tb or Eu-doped GdSrAlO because structure isolation and energy transfer (ET) of Gd → Eu and Gd → Tb were found. Moreover, the energy transfer process from Tb to Eu was verified by the overlap of luminescence spectra and the variation of lifetime. Energy transfer mechanism was determined to be a dipole-dipole interaction, and ET efficiency as well as quantum efficiency were also obtained. Moreover, the emission color of GdSrAlO:Tb,Eu can be tuned from green to red by altering the ratio of Tb/Eu. These results indicate that the GdSrAlO:Tb,Eu phosphor is a promising single-component white light-emitting phosphor.

摘要

在此，通过高温固相反应成功合成了一系列GdSrAlO:Tb,Eu荧光粉，并对其晶体结构和光致发光性能进行了详细研究。与Eu的D→F或D→F跃迁的强烈发射相比，观察到了另一个对应于D→F的强发射。在Tb或Eu掺杂的GdSrAlO中浓度猝灭不明显，因为发现了Gd→Eu和Gd→Tb的结构隔离和能量转移（ET）。此外，通过发光光谱的重叠和寿命的变化验证了从Tb到Eu的能量转移过程。确定能量转移机制为偶极-偶极相互作用，还获得了ET效率和量子效率。此外，通过改变Tb/Eu的比例，GdSrAlO:Tb,Eu的发射颜色可以从绿色调至红色。这些结果表明GdSrAlO:Tb,Eu荧光粉是一种有前途的单组分白光发射荧光粉。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c03c/9077678/d60bf9f184e5/c7ra12260h-f10.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c03c/9077678/fbc62d878794/c7ra12260h-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c03c/9077678/947158d1175d/c7ra12260h-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c03c/9077678/1c89c8c94ab8/c7ra12260h-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c03c/9077678/2c1b0b1e4caa/c7ra12260h-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c03c/9077678/f375800732ae/c7ra12260h-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c03c/9077678/fafaf76b0014/c7ra12260h-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c03c/9077678/9a90f349b3cf/c7ra12260h-f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c03c/9077678/71a0f203fc30/c7ra12260h-f8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c03c/9077678/0451077e9168/c7ra12260h-f9.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c03c/9077678/d60bf9f184e5/c7ra12260h-f10.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c03c/9077678/fbc62d878794/c7ra12260h-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c03c/9077678/947158d1175d/c7ra12260h-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c03c/9077678/1c89c8c94ab8/c7ra12260h-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c03c/9077678/2c1b0b1e4caa/c7ra12260h-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c03c/9077678/f375800732ae/c7ra12260h-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c03c/9077678/fafaf76b0014/c7ra12260h-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c03c/9077678/9a90f349b3cf/c7ra12260h-f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c03c/9077678/71a0f203fc30/c7ra12260h-f8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c03c/9077678/0451077e9168/c7ra12260h-f9.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c03c/9077678/d60bf9f184e5/c7ra12260h-f10.jpg

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