Effect of Ce~(3+) and Tb~(3+) codoping on luminescence properties of Na_3SrMg_(11)(PO_4)_9:Eu~(2+) phosphors

Tang Wanjun; Ding Shuang; Yuan Yuhong; Xie Guangyong

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Effect of Ce~(3+) and Tb~(3+) codoping on luminescence properties of Na_3SrMg_(11)(PO_4)_9:Eu~(2+) phosphors

机译：Ce〜（3+）和Tb〜（3+）对Na_3srmg_（11）（PO_4）_9：Eu〜（2+）磷光体的发光性能的影响

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摘要

Eu2+-doped Na3SrMg11(PO4)(9) has been identified as an efficient blue phosphor recently. The emission properties can be significantly improved by introducing Ce3+ ions into Na3SrMg11(PO4) :Eu2+ phosphor. It is also witnessed that the emission intensity of Eu2+ band increases firstly, and then decreases with the increasing of Tb3+ concentration. Spectral analysis indicates that the luminescence properties of Eu2+ are controlled via the energy transfers between Eu2+ and Ce3+/Tb3+ and the changes in the valence state of Eu ions. Codoping Ce3+/Tb3+ ions facilitates the reduction of Eu3+ in the Na3SrMg11(PO4)(9) host. Not only could the effective concentration of Eu2+ luminescence center be increased, but also the non-radiative transition probability between Eu2+ and Eu3+ could be reduced, leading to an enhancement of Eu2+ luminescence. The strategy of codoping Ce3+/Tb3+ ions as charge compensation agent suggested herein would also work for other phosphors containing mixed valence of dopants.

机译：EU2 + -Doped Na3SRMG11（PO4）（9）已被识别为最近的高效蓝磷。通过将CE3 +离子引入Na3SRMG11（PO4）：EU2 +磷光体，可以显着改善排放性能。还目睹EU2 +带的发射强度首先增加，然后随着Tb3 +浓度的增加而降低。光谱分析表明EU2 +的发光性能通过Eu2 +和Ce3 + / Tb3 +之间的能量转移来控制和欧盟离子的价值变化。 CE3 + / TB3 +离子的编码促进了Na3SRMG11（PO4）（9）宿主中EU3 +的减少。 Eu2 +发光中心的有效浓度不仅可以增加，而且可以减少EU2 +和EU3 +之间的非辐射转变概率，从而引起EU2 +发光的增强。 CE3 + / TB3 +离子作为在此提出的电荷补偿剂的策略也适用于含有掺杂剂的混合价的其他磷光体。

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来源
《Optical Materials》 |2020年第8期|110003.1-110003.8|共8页
作者
Tang Wanjun; Ding Shuang; Yuan Yuhong; Xie Guangyong;
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作者单位

South Cent Univ Nationalities Coll Chem & Mat Sci Hubei Key Lab Catalysis & Mat Sci Wuhan 430074 Peoples R China;

South Cent Univ Nationalities Coll Chem & Mat Sci Hubei Key Lab Catalysis & Mat Sci Wuhan 430074 Peoples R China;

South Cent Univ Nationalities Coll Chem & Mat Sci Hubei Key Lab Catalysis & Mat Sci Wuhan 430074 Peoples R China;

South Cent Univ Nationalities Coll Chem & Mat Sci Hubei Key Lab Catalysis & Mat Sci Wuhan 430074 Peoples R China;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
中图分类
关键词
Phosphor; Photoluminescence; Energy transfer; Charge compensation;

机译：磷;光致发光;能量转移;充电补偿;

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Effect of Ce~(3+) and Tb~(3+) codoping on luminescence properties of Na_3SrMg_(11)(PO_4)_9:Eu~(2+) phosphors

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