Improved luminescence properties of Sc_0.73Y_0.2VO₄: phosphor by codoping with Bi³⁺, and

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• 作者：Xinyu Ye^a ; ^b ; ^{xinyye@yahoo.com" class="auth_mail" title="E-mail the corresponding author} ; Xin Huang^a ; Dejian Hou^a ; Di Wu^a ; Qin Li^a ; Yang Luo^a ; Weixiong You^a ; Youming Yang^a ; ^b
• 关键词：Red phosphor ; Solid state reaction ; Luminescence ; White LED
• 刊名：Physica B: Physics of Condensed Matter
• 出版年：2016
• 出版时间：15 April 2016
• 年：2016
• 卷：487
• 期：Complete
• 页码：8-12
• 全文大小：1572 K

文摘

Bi³⁺, ${\mathrm{P}\mathrm{O}}_4^{3-}$ and ${\mathrm{B}\mathrm{O}}_3^{3-}$ doped Sc_0.73Y_0.2VO₄:${\mathrm{Eu}}_{0.07}^{3+}$ phosphors were synthesized by solid state reaction at 1200 °C. The structure, morphology and luminescence properties were investigated. The synthesized phosphors show narrow particle distribution with average size around 2 μm. Under 365 nm excitation, integrate emission intensity increases after doping with Bi³⁺, ${\mathrm{P}\mathrm{O}}_4^{3-}$ and cf44888e4bd3b511cb6">${\mathrm{BO}}_3^{3-}$. The optimal doping concentrations are 1%, 20%, 10% for Bi³⁺, ${\mathrm{P}\mathrm{O}}_4^{3-}$ and ${\mathrm{BO}}_3^{3-}$, respectively. The thermal stability is greatly improved, especially for ${\mathrm{BO}}_3^{3-}$ doped sample, whose intensity is about 92% of its original intensity even at 200 °C.