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Journal of Inorganic Materials

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2006 , Vol. 21 >Issue 2: 329 - 334

DOI: https://doi.org/10.3724/SP.J.1077.2006.00329

Research Paper

Afterglow and Energy Transfer from Ti to Eu3+ in Y2O2S:0.03Eu,0.03Ti Phosphor

  • HONG Zhang-Lian ,
  • ZHANG Peng-Yue ,
  • HUANG Qiu-Ping ,
  • FAN Xian-Ping ,
  • WANG Min-Quan
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  • 1. Department of Materials Science and Engineering
    2.State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou 310027, China

Received date: 2005-04-01

  Revised date: 2005-05-23

  Online published: 2006-03-20

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Abstract

A new kind of orange-red long afterglow Eu and Ti co-doped Y2O2S phosphor was synthesized via a traditional solid state reaction method under reducing atmosphere of CO. The photoluminescence spectrum, afterglow time-resumed spectrum and afterglow decay curve of the Y2O2S:0.03Ti,0.03Eu phosphors were measured. The result shows that the emission spectrum of Y2O2S:0.03Ti,0.03Eu consists of a group of narrow linear peaks from charge transmission of Eu3+. The orange-red afterglow was observed in present phosphors with two different luminescence centers: a broad yellow emission band around 565nm related to Ti emission and a group of narrow peaks of Eu3+ emission in the longer wavelength range. The afterglow mechanism of Eu3+ emission was suggested to come from the energy transfer process from Ti afterglow emission to Eu ions, and result in two different afterglow centers of Ti afterglow emission and Eu{3+} afterglow emission in present Y2O2S:0.03Ti,0.03Eu phosphor.

Key words： afterglow; energy transfer; phosphor; photoluminescence; rare earth

Cite this article

HONG Zhang-Lian , ZHANG Peng-Yue , HUANG Qiu-Ping , FAN Xian-Ping , WANG Min-Quan . Afterglow and Energy Transfer from Ti to Eu3+ in Y2O2S:0.03Eu,0.03Ti Phosphor[J]. Journal of Inorganic Materials, 2006 , 21(2) : 329 -334 . DOI: 10.3724/SP.J.1077.2006.00329

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