Synthesis and luminescence properties of white-light-emitting phosphor Sr₃GdNa(PO₄)₃F:Dy³⁺

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• 作者：Liu HAN ((韩 柳)) ; Yumei SUN ((孙宇梅)) ; Jiayue SUN ((孙家跃)) ; ^{jiayue_sun@126.com" class="auth_mail" title="E-mail the corresponding author}
• 关键词：luminescence ; rare earths ; w-LEDs ; optical materials
• 刊名：Journal of Rare Earths
• 出版年：2016
• 出版时间：January 2016
• 年：2016
• 卷：34
• 期：1
• 页码：12-16
• 全文大小：770 K

文摘

Novel Sr₃Gd_(1–x)Dy_xNa(PO₄)₃F (SGNP:xDy³⁺, x=0.01, 0.03, 0.05, 0.07, 0.09, 0.11) phosphors were synthesized by a conventional solid-state reaction method at different compositions. The X-ray diffraction results confirmed that the as-prepared samples were pure phase. The phosphor had two intense emission bands centering at 481 and 574 nm which could be attributed to the ⁴F_9/2→⁶H_15/2 transition and the ⁴F_9/2→⁶H_13/2 transition, respectively. The chromaticity coordinates (x, y) of this phosphor were calculated to be (0.3054, 0.3354) located on the region of white light region when excited at 350 nm. The concentration quenching mechanism of Dy³⁺ was ascribed to the dipole-dipole interaction. The current research suggested that the phosphors might be potential application in the w-LEDs.