无机盐工业
主管:中海油天津化工研究设计院有限公司
主办:中海油天津化工研究设计院有限公司
   中海油炼油化工科学研究院(北京)有限公司
   中国化工学会无机酸碱盐专业委员会
ISSN 1006-4990 CN 12-1069/TQ
研究与开发

MgAl2O4:Ce荧光粉辐照合成及发光机理研究

  • 杨晓红
展开
  • 兰州交通大学博文学院,甘肃兰州 730101
杨晓红(1983— ),女,硕士,讲师,研究方向为纳米发光材料;E-mail: yxhong0511@163.com。

收稿日期: 2019-03-25

  网络出版日期: 2020-06-10

基金资助

甘肃省高等学校科研项目(2018A-242)

Irradiation synthesized and photoluminescence mechanism of MgAl2O4:Ce phosphor

  • Xiaohong Yang
Expand
  • Bowen College,Lanzhou Jiaotong University,Lanzhou 730101,China

Received date: 2019-03-25

  Online published: 2020-06-10

摘要

通过伽马射线辐照辅助聚丙烯酰胺凝胶法合成了MgAl2O4和MgAl2O4:Ce荧光粉。通过X射线粉末衍射仪(XRD)、透射电子显微镜(TEM)、紫外可见分光光度计和荧光分光光度计研究了MgAl2O4:Ce荧光粉的晶体结构、表面形貌、光学性质和发光性质;基于实验所获得的结果,分析了纳米级MgAl2O4:Ce荧光粉的发光机理。实验结果表明:采用伽马射线辐照辅助聚丙烯酰胺凝胶法制备纯相MgAl2O4和MgAl2O4:Ce荧光粉的结晶温度要比传统聚丙烯酰胺凝胶法低100 ℃左右;MgAl2O4:Ce荧光粉的平均颗粒尺寸为14 nm,Ce离子掺杂后导致样品颗粒细化;Ce离子的掺入,降低了MgAl2O4的能带值,改善了其颜色性质和发光性质;当采用275 nm的光去激发MgAl2O4:Ce荧光粉时,获得了425 nm和464 nm的蓝光发射。通过能量传递原理分析认为,杂质缺陷(Ce3+)在整个发光过程中扮演了重要角色。MgAl2O4:Ce作为一种抗辐射能力强的荧光粉,在空间照明领域具有很好的应用前景。

本文引用格式

杨晓红 . MgAl2O4:Ce荧光粉辐照合成及发光机理研究[J]. 无机盐工业, 2019 , 51(9) : 30 -35 . DOI: 10.11962/1006-4990.2019-0094

Abstract

MgAl2O4 and MgAl2O4:Ce phosphors were successfully synthesized through a gamma-ray irradiation assisted polyacrylamide gel route.The crystal structure,surface morphology,optical and photoluminescence properties of MgAl2O4:Ce phosphors were studied by X-ray powder diffraction(XRD),transmission electron microscopy(TEM),ultraviolet-visible spectrophotometer and fluorescence spectrophotometer.Based on the experimental results,the photoluminescence mechanism of nanoscale MgAl2O4:Ce phosphors was analyzed.Experiment result showed that the crystallization temperature of MgAl2O4 and MgAl2O4:Ce phosphors synthesized by a gamma-ray irradiation assisted polyacrylamide gel route was lower about 100 ℃ than that of the conventional polyacrylamide gel route.The mean particle size of the MgAl2O4:Ce phosphor was 14 nm.Cerium doping MgAl2O4 decreased the particle size and Eg value,improved the colour and photoluminescence properties of MgAl2O4.Two blue emission peaks at 425 nm and 465 nm were observed for the MgAl2O4:Ce phosphor when the excitation peak was 275 nm.The impurity defect(Ce3+) played a crucial role in the luminescence process on the basis of the energy transfer mecha nism.The MgAl2O4:Ce phosphor can be used as a promising radiation resistance phosphor for space lighting field.

参考文献

[1] Han M, Wang Z S, Xu Y , et al. Physical properties of MgAl2O4,CoAl2O4,NiAl2O4,CuAl2O4,and ZnAl2O4 spinels synthesized by a solution combustion method[J]. Materials Chemistry and Physics, 2018,215:251-258.
[2] Li F T, Zhao Y, Liu Y , et al. Solution combustion synjournal and visi-ble light-induced photocatalytic activity of mixed amorphous and crystalline MgAl2O4 nanopowders[J]. Chemical Engineering Journal, 2011,173(3):750-759.
[3] Goldstein A, Loiko P, Burshtein Z , et al. Development of saturable absorbers for laser passive Q-switching near 1.5 μm based on trans- parent ceramic Co 2+:MgAl2O4[J]. Journal of the American Ceramic Society, 2016,99(4):1324-1331.
[4] Iqbal M J, Ismail B, Rentenberger C , et al. Modification of the physical properties of semiconducting MgAl2O4 by doping with a binary mixture of Co and Zn ions[J]. Materials Research Bulletin, 2011,46(12):2271-2277.
[5] Shiono T, Shiono K, Miyamoto K , et al. Synjournal and characteriza-tion of MgAl2O4 spinel precursor from a heterogeneous alkoxide so-lution containing fine MgO powder[J]. Journal of the American Ceramic Society, 2000,83(1):235-237.
[6] Benaissa S, Hamidouche M, Kolli M , et al. Characterization of nano-structured MgAl2O4 ceramics fabricated by spark plasma sintering[J]. Ceramics International, 2016,42(7):8839-8846.
[7] 张绍纲 . 航天照明[J]. 照明工程学报, 2004,15(2):45-47.
[8] 王仕发, 李丹明, 肖玉华 , 等. 用于空间辐射环境探测的金刚石探测器研究综述[J]. 材料导报, 2018,32(9):1459-1468.
[9] Izumi K, Miyazaki S, Yoshida S , et al. Optical properties of 3d tran-sition-metal-doped MgAl2O4 spinels[J]. Physical Review B, 2007,76(7):075111.
[10] Tabaza W A I, Swart H C, Kroon R E . Luminescence of Ce doped MgAl2O4 prepared by the combustion method[J]. Physica B:Condensed Matter, 2014,439:109-114.
[11] Yang P, Chen C F, Doty F P , et al. Characterizations of a hot-pres-sed polycrystalline spinel:Ce scintillator[J]. Journal of the American Ceramic Society, 2010,93(8):2399-2402.
[12] Jain U K, Dongre J K . Combustion synjournal and photoluminescent properties of Ce3+ activated MgAl2O4 phosphor[J]. International Jo- urnal of Applied Research, 2017,3(4):47-49.
[13] Wang S F, Li Q, Zu X T , et al. Phase controlled synjournal of (Mg,Ca,Ba)-ferrite magnetic nanoparticles with high uniformity[J]. Journal of Magnetism and Magnetic Materials, 2016,419:464-475.
[14] Wang S F, Zu X T, Sun G Z , et al. Highly dispersed spinel(Mg,Ca,Ba)-ferrite nanoparticles:Tuning the particle size and magne- tic properties through a modified polyacrylamide gel route[J]. Ceramics International, 2016,42(16):19133-19140.
[15] 杨玉荣, 张清杰, 易美桂 , 等. 聚丙烯酰胺对半水硫酸钙晶须形貌稳定性的影响[J]. 无机盐工业, 2018,50(12):13-16.
[16] Gao H, Yang H, Wang S . Comparative study on optical and elec-trochemical properties of MFe2O4(M=Mg,Ca,Ba) nanoparticles[J]. Transactions of the Indian Ceramic Society, 2018,77(3):150-160.
[17] Wang S F, Li D M, Yang C Q , et al. A novel method for the synthe-size of nanostructured MgFe2O4 photocatalysts[J]. Journal of Sol-Gel Science and Technology, 2017,84(1):169-179.
[18] Gao H J, Yang H, Wang S F , et al. A new route for the preparation of CoAl2O4 nanoblue pigments with high uniformity and its optical properties[J]. Journal of Sol-Gel Science and Technology, 2018,86(1):206-216.
[19] Wang R T, Liang X P, Peng Y , et al. A novel method for the synthesis of nano-sized MgAl2O4 spinel ceramic powders[J]. Journal of Ceramic Processing Research, 2010,11(2):173-175.
[20] Wang S F, Gao H J, Wei Y , et al. Insight into the optical,color,photoluminescence properties,and photocatalytic activity of the N-O and C-O functional groups decorating spinel type magnesium alu-minate[J]. CrystEngComm, 2019,21(2):263-277.
[21] Wang S F, Li D M, Xiao Y H .Insight into the effects of titanium salt and sintering temperature on the luminescence of Ti:α-Al2O3 phosphor[J]. Optik, 2016,127(20):8562-8569.
[22] Wang S F, Li D M, Xiao Y H . Experimental study of structural,surface morphology,optical and luminescence properties of MAl2O4/Al2O3(M=Co,Ni) composites[J]. Optik,2018,162:172-181.
[23] Ewais E M, El-Amir A A, Besisa D H ,et al.Synjournal of nanocrystalline MgO/MgAl2O4 spinel powders from industrial wastes[J].Journal of Alloys and Compounds, 2017,691:822-833.
[24] Sykora G J, Akselrod M S . Photoluminescence study of photochro-mically and radiochromically transformed Al2O3:C,Mg crystals used for fluorescent nuclear track detectors[J]. Radiation Measurements, 2010,45(3/4/5/6):631-634.
[25] Nassar M Y, Ahmed I S, Samir I . A novel synthetic route for magnesium aluminate(MgAl2O4) nanoparticles using solgel auto combustion method and their photocatalytic properties[J]. Spectrochimica Acta A, 2014,131:329-334.
[26] Wang S F, Yang H, Xian T , et al. Size-controlled synjournal and photocatalytic properties of YMnO3 nanoparticles[J]. Catalysis Communications, 2011,12(7):625-628.
[27] Kulis P A, Springis M J, Tale I A , et al. Impurity-associated colour centres in Mg and Ca doped Al2O3 single crystals[J]. Physica Status Solidi B, 1981,104(2):719-725.
[28] Aitasalo T, Holsa J, Jungner H , et al.Mechanisms of persistent luminescence in Eu2+,RE3+ doped alkaline earth aluminates[J].Journal of Luminescence, 2001, 94-95:59-63.
[29] 吕兴栋, 舒万艮 . 稀土离子激活碱土铝酸盐长余辉光致发光材料研究进展[J]. 稀土, 2005,26(2):66-72.
文章导航

/