Synthesis and tunable blue–green color emission and energy transfer of Ce³⁺, Tb³⁺ co-doped BaZrSi₃O₉ phosphors

详细信息    查看全文

• 作者：Shiqi Liu ; Yujun Liang ; Yingli Zhu ; Rui Xu…
• 刊名：Journal of Materials Science: Materials in Electronics
• 出版年：2016
• 出版时间：November 2016
• 年：2016
• 卷：27
• 期：11
• 页码：12222-12232
• 全文大小：2,085 KB
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Optical and Electronic Materials
  Characterization and Evaluation Materials
  
• 出版者：Springer New York
• ISSN：1573-482X
• 卷排序：27

文摘

Utilizing energy transfer process, Ce3+, Tb3+ co-doped BaZrSi₃O₉ (BZS) phosphors have been successfully prepared via solid state reaction process. The phase structure, photoluminescence properties, decay curves, thermal stability, and the energy transfer mechanism were investigated in this paper. The critical distance calculated by quenching concentration method was 8.84 Å, and the energy transfer process from Ce3+ to Tb3+ in BZS:Ce3+/Tb3+ phosphors had been demonstrated to be a resonant type via a dipole–quadrupole mechanism. The emission colors of the phosphors could be tuned from blue (0.1625, 0.1261) to green (0.2979, 0.5473) through the corresponding Ce3+ to Tb3+ energy transfer. Moreover, thermal quenching luminescence results revealed that BZS:Ce3+, Tb3+ exhibited good thermal stability. The Tb3+ intensity of BZS:0.04Ce3+, 0.02Tb3+ sample showed about 60.88 % of its initial emission intensity at room temperature. The above results indicate that the phosphors may be potentially used as single-component blue–green emission phosphors for application in light emitting device.