A novel un-doped long lasting phosphorescence phosphor： SrZrSi2O7

A novel phosphor of un-doped Sr Zr Si2O7 material with blue long lasting phosphorescence which could be recorded for about 5400 s（0.32 mcd/m^2） was developed. It revealed that both the emission centers and traps levels were related to the oxygen-deficient defects which were induced in reducing atmos...

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Published inJournal of rare earths Vol. 33; no. 1; pp. 37 - 41
Main Author 李晓晨 邹泽华 王治龙 武传强 张加驰 王育华
Format Journal Article
LanguageEnglish
Published Elsevier B.V 2015
Subjects
long lasting phosphorescence
luminescence
MCD
phosphor
rare earths
retrapping process
SrZrSi2O7
发光中心
掺杂
水平分布
磷光
荧光粉
还原气氛
陷阱
phosphor
long lasting phosphorescence
luminescence
retrapping process
SrZrSi2O7
rare earths
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Summary:A novel phosphor of un-doped Sr Zr Si2O7 material with blue long lasting phosphorescence which could be recorded for about 5400 s（0.32 mcd/m^2） was developed. It revealed that both the emission centers and traps levels were related to the oxygen-deficient defects which were induced in reducing atmosphere. The filling and fading experiments indicated that the traps levels in Sr Zr Si2O7 were continuous in distribution. The influence of shallow traps on deep traps was investigated and the important role of the bridge effect was revealed. The un-doped Sr Zr Si2O7 material obtained in reducing atmosphere showed potential application as a cheap blue long lasting phosphorescence phosphor.
Bibliography:A novel phosphor of un-doped Sr Zr Si2O7 material with blue long lasting phosphorescence which could be recorded for about 5400 s（0.32 mcd/m^2） was developed. It revealed that both the emission centers and traps levels were related to the oxygen-deficient defects which were induced in reducing atmosphere. The filling and fading experiments indicated that the traps levels in Sr Zr Si2O7 were continuous in distribution. The influence of shallow traps on deep traps was investigated and the important role of the bridge effect was revealed. The un-doped Sr Zr Si2O7 material obtained in reducing atmosphere showed potential application as a cheap blue long lasting phosphorescence phosphor.
11-2788/TF
LI Xiaochen, ZOU Zehua, WANG Zhilong, WU Chuanqiang, ZHANG Jiachi, WANG Yuhua （1. School of Materials Science and Engineering, Direction of Electronic Information Materials, Southeast University, Nanjing 211189, China;2. Key Laboratory for Magnetism Magnetic Materials of the Ministry of Education, Lanzhou University, Lanzhou 730000, China;3. Gansu University of Traditional Chinese Medicine, Lanzhou 730000, China）
SrZrSi2O7; long lasting phosphorescence; phosphor; luminescence; retrapping process; rare earths
ISSN:1002-0721
2509-4963
DOI:10.1016/S1002-0721(14)60380-X