Influence of pH value on properties of YPO4：Tb3＋ phosphor by co-precipitation method

A series of Y1_xPO4：xTb3＋ （x=0.005-0.1） phosphors were successfully fabricated by using co-precipitation method with NHzH2PO4 as phosphorus source. The structure and morphology characterization of the luminescent material was investigated with X-ray powder diffraction （XRD） and field emission scanni...

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Bibliographic Details
Published inJournal of rare earths Vol. 33; no. 4; pp. 346 - 349
Main Author 李旭 王皓岩 关丽 付跃举 郭镇 袁坤生 铁利成 杨志平 滕枫
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.04.2015
Subjects
co-precipitation
luminescence
pH value
phosphor
pH值
rare earths
X射线粉末衍射
X射线衍射分析
共沉淀法
场发射扫描电子显微镜
性能
白色发光二极管
磷光体
co-precipitation
phosphor
pH value
luminescence
rare earths
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ISSN1002-0721
2509-4963
DOI10.1016/S1002-0721(14)60424-5

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Summary:A series of Y1_xPO4：xTb3＋ （x=0.005-0.1） phosphors were successfully fabricated by using co-precipitation method with NHzH2PO4 as phosphorus source. The structure and morphology characterization of the luminescent material was investigated with X-ray powder diffraction （XRD） and field emission scanning electron microscopy （FESEM）. The XRD patterns indicated that the samples belonged to tetragonal phase. Luminescence properties were discussed by measuring the excitation and emission spectra. The phosphor could be excited by UV light （340-390 nm） and emitted green light, with the emission peaks located at 491 （5Da→7F6）, 550 （SD4→7Fs）, 589 （5D4→7F4） and 624 nm （SD4→TF3）. In addition, the pH value and activator concentration had great effects on the emission intensity. The results illuminated that this phosphor could be used for UV based white light emitting diodes and co-precipitation method could be used to prepare better appearance phosphor.
Bibliography:11-2788/TF
LI Xu WANG Haoyan GUAN Li , FU Yueju , GUO Zhen , YUAN Kunsheng TIE Licheng , YANG Zhipinging, TENG Feng （1. Hebei Key Laboratory of Optic-electronic Information and Materials, College of Physics Science and Technology, Hebei University, Baoding 071002, China, 2. Key Laboratory of Luminescence and Optical Information, Ministry of Education, School of Science, Beijing Jiao Tong University, Beijing 100044, China）
luminescence; phosphor; co-precipitation; pH value; rare earths
A series of Y1_xPO4：xTb3＋ （x=0.005-0.1） phosphors were successfully fabricated by using co-precipitation method with NHzH2PO4 as phosphorus source. The structure and morphology characterization of the luminescent material was investigated with X-ray powder diffraction （XRD） and field emission scanning electron microscopy （FESEM）. The XRD patterns indicated that the samples belonged to tetragonal phase. Luminescence properties were discussed by measuring the excitation and emission spectra. The phosphor could be excited by UV light （340-390 nm） and emitted green light, with the emission peaks located at 491 （5Da→7F6）, 550 （SD4→7Fs）, 589 （5D4→7F4） and 624 nm （SD4→TF3）. In addition, the pH value and activator concentration had great effects on the emission intensity. The results illuminated that this phosphor could be used for UV based white light emitting diodes and co-precipitation method could be used to prepare better appearance phosphor.
ISSN:1002-0721
2509-4963
DOI:10.1016/S1002-0721(14)60424-5