Luminescent properties of sol–gel processed red-emitting phosphor Eu3+, Bi3+ co-doped (Ca,Sr)(Mo,W)O4

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• 作者：Huidong Xie ; Fei Li ; Haihong Xi ; Ran Tian…
• 刊名：Journal of Materials Science: Materials in Electronics
• 出版年：2015
• 出版时间：January 2015
• 年：2015
• 卷：26
• 期：1
• 页码：23-31
• 全文大小：1,085 KB
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• 作者单位：Huidong Xie (1)
  Fei Li (1)
  Haihong Xi (1)
  Ran Tian (1)
  Xiaochang Wang (2)
  
  1. School of Science, Xi’an University of Architecture and Technology, Xi’an, 710055, China
  2. Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi’an University of Architecture and Technology, Xi’an, 710055, China
  
• 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

文摘

A series of red-emitting phosphors Ca0.6Sr0.4?.5y?.5zMo1?xWxO4:EuyBiz (x?=?0-, y?=?0-.14, z?=?0-.12) have been synthesized by a sol–gel method. The effects of calcining temperature, concentrations of Bi3+ and Eu3+, and the W/Mo ratio on the luminescent properties were investigated. X-ray diffraction and scanning electron microscopic results showed that as-prepared phosphors were of single phase with several microns. The Bi3+ and Eu3+ co-doped phosphors showed remarkably intense red emission at 618?nm. The emission intensities of the series reached maximum for compositions at x?=?0.4, y?=?0.12 and z?=?0.08 when the calcining temperature was 900?°C. Temperature dependent emission intensity of the phosphor suggested that the as-synthesized product had good thermal stability with a thermal quenching activation energy of 0.31?eV. The decay curves showed the energy transfer efficiency from MoO4 2?/sup> to Eu3+ increased with an increase in the Mo6+ doping content.