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• 作者：Hyunho Shin ; Shafqat Ullah ; Byungwoo Park
• 关键词：Strontium aluminate ; Boron oxide ; Long after ; glow luminescence ; Photoluminescence
• 刊名：Journal of the Korean Physical Society
• 出版年：2016
• 出版时间：January 2016
• 年：2016
• 卷：68
• 期：1
• 页码：54-58
• 全文大小：999 KB
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• 作者单位：Hyunho Shin (1)
  Shafqat Ullah (1)
  Byungwoo Park (2)
  
  1. Department of Materials Engineering, Gangneung-Wonju National University, Gangneung, 25457, Korea
  2. Department of Nano-Optical Engineering, Korea Polytechnic University, Siheung, 15073, Korea
  
• 刊物主题：Physics, general; Theoretical, Mathematical and Computational Physics; Particle and Nuclear Physics;
• 出版者：Springer Netherlands
• ISSN：1976-8524

文摘

SrAl₂O₄: 0.04Eu2+, 0.08Dy3+ - xB₂O₃ (0 ≤ x ≤ 0.4) phosphors were synthesized by using the conventional solid-state reaction route. The long-afterglow (LAG) luminescence increased notably up to x = 0.3, followed by a slight decrease at x = 0.4. A good correlation between the LAG luminescence and the total quantity of the luminescent crystalline phases (SrAl₂O₄ and Sr₄Al₁₄O₂₅) was found, based on the Rietveld refinement of the X-ray diffraction pattern. However, through a comparison of the PL excitation/emission with the LAG luminescence, we concluded that the maximal LAG luminescence was not only governed by the quantity of the luminescent host but also by the quality of the host (the concentration of the doped Eu2+ and especially the Dy3+ in the luminescent phases).