Optical properties and energy transfer of NaCaPO₄: Tb³,Eu³⁺ phosphors

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• 作者：Zhijuan Liang ; Fuwang Mo ; Xinguo Zhang ; Liya Zhou ; ^{zhouliyatf@163.com" class="auth_mail} ; peican Chen ; Chengyi Xu
• 关键词：Optical materials ; Phosphor ; Luminescence
• 刊名：Ceramics International
• 出版年：June, 2014
• 年：2014
• 卷：40
• 期：5
• 页码：7501-7506
• 全文大小：877 K

文摘

A novel yellow-emitting phosphor NaCaPO₄:Tb³⁺,Eu³⁺ was synthesized using a conventional, solid-state reaction for solid-state lighting applications. The luminescence properties supported the occurrence of energy transfer from Tb³⁺ to Eu³⁺ ions. The energy transfer mechanism was studied and demonstrated to be a quadrupole-quadrupole interaction. The decay curves of NaCaPO₄:0.04Tb³⁺,xEu³⁺ phosphors further confirmed the existence of energy transfer from Tb³⁺ to Eu³⁺ ions. This energy transfer induced a change in the emitted color of the phosphors from green to yellow, which can be obtained by appropriately tuning the Eu³⁺ concentration. The results indicated that NaCaPO₄:Tb³⁺,Eu³⁺ provided a clue for the search of phosphors for white-light-emitting diodes.