红色荧光粉Zr(MoO_4)_2·MoO_3:Eu~(3+)的发光性能和能量转移
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摘要
采用共沉淀法制备了一系列Zr(MoO_4)_2·MoO_3∶Eu~(3+),并对荧光粉进行了X射线衍射仪和荧光光谱仪分析。结果表明:荧光粉为一混晶,由Zr(MoO4)2和MoO3组成。荧光粉在465nm的激发下,在617nm处产生强的红光发射,发射光谱在617nm处的强度是激发光谱在465nm处强度的2.26倍。这是因为在465nm的激发下,Eu3+的能量从磁偶极中心转移到电偶极中心,使617nm处发光增强。对蓝光激发白光LED而言,Zr(MoO4)2·MoO3∶Eu3+是具有一定应用前景的红色荧光粉。
A series of Zr(MoO_4)_2·MoO_3∶Eu~(3+) phosphors were prepared by coprecipitation method,and analyzed by XRD and PL.The results showed that the phosphors had mixture crystalline phases of Zr(MoO_4)_2 and MoO3.The phosphors excited by 465 nm,and exhibited strong red emission peak at 617 nm.Emission spectrum(PL)intensity at 617 nm was 2.26 times as high as excitation spectrum(PLE)intensity at 465 nm.It was because that cooperative energy transfers from MD center to ED-Eu3+excited by 465 nm,enhanced photoluminescence at 617 nm.Zr(MoO4)2·MoO3∶Eu3+was a red-emitting phosphor which had application prospect for blue-based white LED.
A series of Zr(MoO_4)_2·MoO_3∶Eu~(3+) phosphors were prepared by coprecipitation method,and analyzed by XRD and PL.The results showed that the phosphors had mixture crystalline phases of Zr(MoO_4)_2 and MoO3.The phosphors excited by 465 nm,and exhibited strong red emission peak at 617 nm.Emission spectrum(PL)intensity at 617 nm was 2.26 times as high as excitation spectrum(PLE)intensity at 465 nm.It was because that cooperative energy transfers from MD center to ED-Eu3+excited by 465 nm,enhanced photoluminescence at 617 nm.Zr(MoO4)2·MoO3∶Eu3+was a red-emitting phosphor which had application prospect for blue-based white LED.
引文
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[39]何冬丽,吕树臣,曲秀荣,等.Gd2(WO4)3∶Eu3+,Sm3+纳米晶的制备及Sm3+对Eu3+特征发射的敏化作用[J].发光学报,2013,34(2):171-177.
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[2]Liu Y,Lu Z G,Gu Y Y,et al.Hydrothermal-assisted ion exchange synthesis and photoluminescence of Li+and Eu3+codopednaLa(WO4)2as near-UV type red phosphors[J].J Lumin,2012,5(132):1220-1225.
[3]Shen X Q,Li L L,He F L,et al.Effects of doped Li+and Eu3+ions contento structured luminescent properties of LaxSr1-2x(MoO4)∶Eu3+x red emitting phosphors for white LEDs[J].Mater Chem Phys,2012,132:471-475.
[4]Yang Z P,Liu Y F,Wang L W,et al.Luminescence,properties of the single white emitting phosphor Eu2+,Mn2+co-doped Ca2SiO3Cl2[J].Acta Phys Sin,2007,56(4):546-550.
[5]Huh Y,Park J,Kweon S,et al.Phosphor converted three band white LED[J].Bull Korean Chem Soc,2004,25:1585-1588.
[6]Chen F M,Liu X H.Structure and photoluminescence properties of La2Mo(W)O6∶Eu3+as red phosphors for white LEDapplications[J].Opt Mater,2013,35:2716-2720.
[7]Tian Y,Qi X H,Wu X W,et al.Luminescent properties of Y2(MoO4)3∶Eu3+red phosphors with flower like shape prepared viacoprecipitation method[J].J Phys Chem,2009,113:10767-10772.
[8]Cheng L H,Zhong H Y,Sun J S,et al.Flux and concentration effecton Eu3+doped Gd2(MoO4)3 phosphor[J].J Rare Earths,2008,26(2):211-214.
[9]Pang M L,Liu X M,Lin J.Luminescence properties of R2MoO6∶Eu3+(R=Gd,Y,La)phosphors prepared by pechini sol-gel process[J].J Mater Res,2005,10(20):2676-2681.
[10]Meng F G,Zhang X M,Li H,et al.Synthesis and spectral characteristics of La2MoO6∶Ln3+(Ln=Eu,Sm,Dy,Pr,Tb)polycrystals[J].J Rare Earths,2012,30(9):866-870.
[11]Jin H J,Wu H,Tian L I.Improved luminescence of Y2MoO6∶Eu3+by doping Li+ions for light emitting diode application[J].J Lumin,2012,132:1188-1191.
[12]朱德生,姜锋.NH4Cl助熔合成CaMoO4∶Eu3+红色荧光粉及其发光性质[J].功能材料,2017,48(3):03232-03237,03242.
[13]任凯,张建夫,常艺,等.Ca2(+1-x)Na+xMoO4∶Eu3+荧光粉的合成及发光性能的研究[J].周口师范学院学报,2016,33(5):98-101.
[14]冯颖,童义平,文思.微波辅助溶胶-凝胶法合成Gd0.4(MoO4)3∶1.6Eu3+红色荧光粉及其发光性能的研究[J].人工晶体报,2016,54(4):1024-1028.
[15]欧阳艳,张晓蓉,许艳红,等.共沉淀法合成NaLa(MoO4)2∶Eu3+红色荧光粉及其发光性能的研究[J].化工新型材料,2016,44(8):128-130,134.
[16]张振乾,马晶,赵婉男,等.NaGd(MoO4)2∶Eu3+发光粉的水热合成与发光性质[J].硅酸盐通报,2016,35(11):3541-3545.
[17]王桂萍,王桂燕.La2(MoO4)3∶Eu3+纳米红色荧光粉的合成及其发光特性[J].精细化工,2017,34(7):725-729.
[18]Zhang X,Li W,Seo H J.Concentration dependence of energy transfer between Eu2+ions occupying two crystallographic sites in Ba1.6Ca0.4P2O7[J].Electrochem Soc,2011,158:J155-J157.
[19]Mondal S S,Behrens K,Matthes P R,et al.White light emission of IFP-1by in situ co-doping of the MOF pore system with Eu3+and Tb3+[J].J Mater Chem C,2015,3:4623-4631.
[20]Yang L,Zhou L,Huang Y,et al.Ag-catalyzed synthesis of europium borate Eu-(BO2)3nanoeires,groeth mechanism and luminescent properties[J].Mater Res Bull,2011,46:239-243.
[21]Peter A J,Banu I B S.Enhanced photoluminescence of Li3Ba2Gd3(MoO4)8∶Eu3+red phosphor synthesized by mechanochemically assisted direct solid state reaction method at room temperature[J].Mater Sci Mater Electron,2015,26:2045-2052.
[22]Wu H M,Chen H,Liu Y F,et al.Highly uniform NaLa(MoO4)2∶Eu3+microspheres:microwave-assisted hydrothermal synthesis,growthmechanism and enhanced luminescent properties[J].J Mater Sci Mater Electron,2014,25:3109-3115.
[23]Liao J H,Zhou D,Yang B,et al.Sol-gelpreparation and photoluminescence properties of CaLa2(MoO4)4∶Eu3+phosphors[J].Lumin,2013,134:533-538.
[24]Ghosh P,Mudring A V.Phase selective synthesis of quantum cutting nanophosphors and the observation of a spontaneous room temperature phase transition[J].Nanoscale,2016,8:8160-8169.
[25]You F T,Huang S H,Liu S M,et al.VUV excited luminescence of MGdF4∶Eu3+(M=Na,K,NH4)[J].Lumin,2004,110:95-99.
[26]Tian B N,Chen B J,Tian Y,et al.Visible quantum cutting in BaGd2ZnO5∶Eu3+phosphor[J].Ceram Int,2012,38:3537-3540.
[27]Zhang S Y,Huang Y L,Nakai Y,et al.The luminescence characterization and thermal stability of Eu2+ions-doped NaBaPO4phosphor[J].Am Ceram Soc,2011,94:2987-2992.
[28]Yu X,Xu X H,Yu H L,et al.Persistence energy transfer between inequivalent Eu2+ions in CaAl2Si2O8∶Eu2+[J].Mater Res Bull,2012,47:2696-2699.
[39]何冬丽,吕树臣,曲秀荣,等.Gd2(WO4)3∶Eu3+,Sm3+纳米晶的制备及Sm3+对Eu3+特征发射的敏化作用[J].发光学报,2013,34(2):171-177.
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