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Enhancing emission intensity and thermal stability by charge compensation in Sr2 Mg3 P4 O15 :Eu3+
Journal of the American Ceramic Society ( IF 3.9 ) Pub Date : 2017-11-28 , DOI: 10.1111/jace.15334
Shiqi Liu 1, 2 , Yujun Liang 1, 2 , Yingli Zhu 1, 2 , Haoran Li 1, 2 , Jiahui Chen 1, 2 , Mengyuan Wang 1, 2 , Wenjian Li 1, 2
Affiliation  

Charge compensation was the effective methods to enhance the luminescence properties of phosphors. In this paper, novel single-phased orange light emitting Sr2Mg3P4O15:Eu3+ phosphors were prepared by solid state method. The phase purity and luminous characteristics were examined detailly. Meanwhile, three kinds of charge compensation methods (co-doping the alkali metal R+ (R+ = Li, Na, K), substituting Si4+ for P5+ and self-compensation) were employed to solve the charge imbalance problem between Sr2+ and Eu3+. The results showed that emission intensity of Eu3+ was improved by 1.43 (Li+), 1.58 (Na+), 1.53 (K+), 1.61 (Si4+) and 1.30 (self) times than that of Sr1.6Mg3P4O15:0.40Eu3+ respectively and there was no change of the emitting color simultaneously. Furthermore, as the temperature reached at 423 K, the emission intensity increased from 41.67% of Sr1.6Mg3P4O15:0.40Eu3+ to 55.69% (Li+), 61.62% (Na+), 58.98% (K+), 71.15% (Si4+) and 80.59% (self) of that at room temperature. The reasons of those phenomena were the reduction of ion vacancies caused by charge imbalance through the charge compensation process. The specific mechanisms were elaborated in detail. Overall, this research validated that the charge compensation strategies could be severed as the key method to improve the luminescence properties, especially the thermal stability of phosphor. This article is protected by copyright. All rights reserved.

中文翻译:

通过 Sr2 Mg3 P4 O15 :Eu3+ 中的电荷补偿提高发射强度和热稳定性

电荷补偿是提高荧光粉发光性能的有效方法。本文采用固态法制备了新型单相橙色发光 Sr2Mg3P4O15:Eu3+ 荧光粉。详细检查了相纯度和发光特性。同时,采用三种电荷补偿方法(共掺杂碱金属R+(R+ = Li、Na、K)、用Si4+代替P5+和自补偿)解决Sr2+和Eu3+之间的电荷不平衡问题。结果表明,Eu3+的发光强度分别比Sr1.6Mg3P4O15:0.40Eu3+提高了1.43(Li+)、1.58(Na+)、1.53(K+)、1.61(Si4+)和1.30(self)倍,且无同时改变发光颜色。此外,随着温度达到 423 K,发射强度从 41 增加。67% 的 Sr1.6Mg3P4O15:0.40Eu3+ 到室温下的 55.69% (Li+)、61.62% (Na+)、58.98% (K+)、71.15% (Si4+) 和 80.59%(自身)。这些现象的原因是通过电荷补偿过程导致电荷不平衡导致的离子空位减少。详细阐述了具体机制。总体而言,这项研究证实了电荷补偿策略可以作为提高发光性能,尤其是荧光粉热稳定性的关键方法。本文受版权保护。版权所有。详细阐述了具体机制。总体而言,这项研究证实了电荷补偿策略可以作为提高发光性能,尤其是荧光粉热稳定性的关键方法。本文受版权保护。版权所有。详细阐述了具体机制。总体而言,这项研究证实了电荷补偿策略可以作为改善发光性能,尤其是荧光粉热稳定性的关键方法。本文受版权保护。版权所有。
更新日期:2017-11-28
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