A novel red phosphor BaZn₂(PO₄)₂:Sm³⁺, R⁺ (R=Li, Na, K)

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• 作者：Zhijun Wang^a ; ^b ; Panlai Li^a ; ^b ; ^{lipanlai_780616@yahoo.com.cn} ; Zhiping Yang^a ; ^b ; Qinglin Guo^a ; ^b
• 关键词：Phosphor ; Luminescence ; BaZn2(PO4)2 ; Sm3+ ; R+ (R=Li ; Na ; K)
• 刊名：Journal of Luminescence
• 出版年：2012
• 期刊代码：54_00222313
• 类别：ch
• 出版时间：August, 2012
• 卷：132
• 期：8
• 页码：1944-1948
• 文件大小：568 K

摘要

BaZn₂(PO₄)₂:Sm³⁺ phosphor was synthesized by a high temperature solid-state reaction in atmosphere. BaZn₂(PO₄)₂:Sm³⁺ phosphor can be efficiently excited by ultraviolet and blue light, and the emission spectrum consists of three emission peaks at 568, 606 and 660 nm. By increasing the Sm³⁺ doped content, the emission intensity of the phosphor can reach the maximum at 0.02 mol Sm³⁺, then the concentration quenching occurs. By introducing the compensator charge R⁺ (R=Li, Na, K) into the BaZn₂(PO₄)₂:Sm³⁺ phosphor, its emission intensity can be enhanced. The Commission International de l'Eclairage (CIE) chromaticity coordinates of Ba_0.96Zn₂(PO₄)₂:0.02Sm³⁺, 0.02K⁺ phosphor were (x=0.623, y=0.361). The results indicate that BaZn₂(PO₄)₂:Sm³⁺, R⁺ (R=Li, Na, K) may be a promising red phosphor for white light-emitting diodes.