A Single-Composition Trichromatic White-Light-Emitting Phosphor Based on Sr_lus-plus">8ZnY(PO_lus-plus">4)_lus-plus">7 Coactivated with Ce^lus-plus">3+, Tb^lus-plus">3+, and Mn^lus-plus">2+

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• 作者：Anxiang Guan ; Guofang Wang ; Siyu Xia ; Xinguo Zhang&#8230
• 关键词：Trichromatic ; luminescence ; rare earths ; optical materials
• 刊名：Journal of Electronic Materials
• 出版年：2017
• 出版时间：March 2017
• 年：2017
• 卷：46
• 期：3
• 页码：1451-1457
• 全文大小：
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Optical and Electronic Materials; Characterization and Evaluation of Materials; Electronics and Microelectronics, Instrumentation; Solid State Physics;
• 出版者：Springer US
• ISSN：1543-186X
• 卷排序：46

文摘

Ce3+/Tb3+/Mn2+-codoped Sr₈ZnY(PO₄)₇ (SZYP) white-emitting phosphors have been synthesized via solid-state reaction technology. The overlapping spectra between the excitation bands of Mn2+ and Tb3+ ions and the emission band of Ce3+ suggest that Ce3+ → Mn2+ and Ce3+ → Tb3+ energy transfer occurs. The emission hues exhibited by Ce3+/Tb3+- and Ce3+/Mn2+-codoped phosphors could be modulated from bluish to greenish region and from bluish to reddish region by simply adjusting the relative content of Ce3+/Tb3+ and Ce3+/Mn2+, respectively. SZYP:Ce3+,Tb3+,Mn2+ samples exhibited three dominant bands at 410 nm, 545 nm, and 600 nm, attributable to electronic transitions of Ce3+, Tb3+, and Mn2+ ions, respectively. Thus, color-tunable emission was achieved by accurately modulating the concentrations of Ce3+, Tb3+, and Mn2+ ions. SZYP:0.05Ce3+,0.11Mn2+,0.11Tb3+ was found to be an ideal white-light-emitting phosphor with color coordinates of (0.34, 0.33) and correlated color temperature of about 5144.83 K. The results indicate that Ce3+/Tb3+/Mn2+-tridoped SZYP phosphors are potential single-component white-emitting candidates for application in ultraviolet- and white-light-emitting diodes.