Enhancing the water-resistance stability of CaS:Eu2+,Sm2+ phosphor with SiO2-PMMA composite coating
Zhang, JQ (Zhang Jieqiang)1; Fan, YW (Fan Yanwei)1; Chen, ZY (Chen Zhaoyang)1; Yan, SY (Yan Shiyou)1; Wang, JH (Wang Junhua)1; Zhao, PJ (Zhao Pengjun)1; Bin, H (Hao Bin)1; Gai, MQ (Gai Minqiang)1; Chen, ZY
2015
发表期刊JOURNAL OF RARE EARTHS
卷号33期号:9页码:922-926
摘要This work was aimed at improving the water-resistance stability of CaS:Eu2+,Sm2+ phosphor. An organic-inorganic composite coating method was adopted in order to obtain ideal phosphor. The phosphor was coated with SiO2 via sol-gel technique and it was also covered by polymethyl methacrylate (PMMA) via dissolution-cohesion technique. Powder X-ray diffraction (XRD) patterns, fluorescence spectroscopy and transmission electron microscopy (TEM) were employed to characterize the phase structures, emission spectrum and surface morphologies, respectively. In addition, the water-resistance stability of the phosphor was tested by soaking the phosphor into deionized water. The results showed that the phase structures remained the same as the uncoated phosphor and the position of the fluorescence peak did not shift after surface treatment. Results showed that the water-resistance stability of the phosphor was improved to some degree. Moreover, the photoluminescence (PL) intensity of the coated phosphors reduced less than 10% of the original phosphors. Though being soaked into deionized water for 50 h, the phosphor coated with 10 wt.%SiO2-10 wt.%PMMA retained 85.9% PL intensity compared to that of the uncoated phosphor. Therefore, it could be concluded that the 10 wt.%SiO2-10 wt.%PMMA composite coating effectively improved the phosphor water resistance and retained its good optical properties.
关键词Sio2-pmma Composite Coating Cas:Eu2++ Photoluminescence Sm2++ Red Phosphor Ph Value Water-resistance Stability Rare Earths
DOI10.1016/S1002-0721(14)60506-8
收录类别SCI
WOS记录号WOS:000361928200004
引用统计
文献类型期刊论文
条目标识符http://ir.xjipc.cas.cn/handle/365002/4893
专题中国科学院特殊环境功能材料与器件重点试验室
通讯作者Chen, ZY
作者单位1.Chinese Acad Sci, Key Lab Funct Mat & Devices Special Environm, Xinjiang Key Lab Elect Informat Mat & Devices, Xinjiang Tech Inst Phys & Chem, Urumqi 830011, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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Zhang, JQ ,Fan, YW ,Chen, ZY ,et al. Enhancing the water-resistance stability of CaS:Eu2+,Sm2+ phosphor with SiO2-PMMA composite coating[J]. JOURNAL OF RARE EARTHS,2015,33(9):922-926.
APA Zhang, JQ .,Fan, YW .,Chen, ZY .,Yan, SY .,Wang, JH .,...&Chen, ZY.(2015).Enhancing the water-resistance stability of CaS:Eu2+,Sm2+ phosphor with SiO2-PMMA composite coating.JOURNAL OF RARE EARTHS,33(9),922-926.
MLA Zhang, JQ ,et al."Enhancing the water-resistance stability of CaS:Eu2+,Sm2+ phosphor with SiO2-PMMA composite coating".JOURNAL OF RARE EARTHS 33.9(2015):922-926.
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