Abstract: White light-emitting diodes (WLEDs) has been widely research owing to their vast merits of high luminescence efficiency,energy saving,long lifetime and environmentally friendly.In order to obtain high efficiency red phosphor,a Ca(WO4)1-x(MoO4)x∶Eu3+ solution was made,which was activated by Eu3+cation and to explore how the component changed in solid solution influenced the illuminant properties of the material.The single-phase red phosphor was synthesized via a conventional high-temperature solid-state reaction route using WO3,MoO3,CaCO3 and Eu2O3.Based on the precursor,Eu3+ and Li+ were kept constant as 10% while (WO2-4) were replaced by (MoO4)2- with different molar percentages.Meanwhile,Ca2+ was replaced by different concentrations of Mg2+ and Zn2+.The structure of the samples was analyzed by XRD,while the luminescent properties of the samples were studied by excitation spectrum and emission spectrum.The result indicated that when the calcination temperature was 800℃,(WO2-4) substitute for (MoO4)2- molar percentage of 25%,Li+ and Eu3+ doping concentration of 10%,Mg2+ doping concentration of 1%,the luminescence properties of the phosphor was the strongest.Its excitation peak was located at about 352nm,the emission peak was emitted at about 612nm.When doping Zn2+with a concentration of 3% had the strongest luminescence properties,the excitation peak is located at about 294nm,and the emission peak located at about 612nm.
武超, 李峰, 范伟, 张静, 孙杰. Mg2+或Zn2+掺杂的Ca(WO4)1-x(MoO4)x∶Eu3+荧光粉的制备及发光性能研究[J]. 化工新型材料, 2019, 47(11): 87-93.
Wu Chao, Li Feng, Fan Wei, Zhang Jing, Sun Jie. Preparation and luminescent properties of Mg2+/Zn2+ doped Ca(WO4)1-x(MoO4)x∶Eu3+. New Chemical Materials, 2019, 47(11): 87-93.
[1] 周志萍.白光LED灯用红色荧光粉的制备和性能研究[J].华南农业大学学报,2016,4(7):11. [2] Yan B,Su X Q.In situ chemical coprecipitation composition of hybrid precursors to synthesize YPxV1-xO4∶Eu3+ micron crystalline phosphors[J].Materials Science and Engineering:B,2015,116(2):196-201. [3] 庄李强,辛浩,黄月霞,等.WO2-4掺杂SrMoO4∶Eu,Li红色荧光粉的制备与发光性能研究[J].中国稀土学报,2015,33(6):650-656. [4] Ayyappan S,Gopalan R S,Subbanna G N,et al.Nanoparticles of Ag,Au,Pd,and Cu produced by alcohol reduction of the salts[J].Journal of Materials Research,1997,12(2):398-401. [5] Nakamura S,Fasol G.The blue laser diode∶$bGaN based light emitters and lasers[J].Journal of luminescence,2016,2(4):10. [6] 吴作贵,张旭东,何文.白光LED用YAG∶Ce3+荧光粉制备技术的研究进展[J].山东陶瓷,2007,30(1):28-30. [7] Jang H S,Im W B,Lee D C.Enhancement of red spectral emission intensity of Y3Al5O12∶Ce3+ phosphor via Pr co-doping and Tb substitution for the application to white LEDs[J].Journal of luminescence,2016,126(2):371-377. [8] 刘霁,李万万,孙康.白光LED及其涂敷用荧光粉的研究进展[J].材料导报,2007,21(8):116-120. [9] 徐修冬,许贵真,吴占超.白色发光二极管用荧光粉研究进展(Ⅰ)—蓝光或近紫外光发射半导体芯片激发的荧光粉[J].中山大学学报:自然科学版,2007,46(5):124-128. [10] 印琰,杨宝东,朱月华.白光LED用荧光粉的发展现状[J].中国照明电器,2009,3(6):10. [11] Tang T P,Yang M R,Chen H S.Photoluminescence of ZnS∶Sm phosphor prepared in a reductive ahnosphere[J].Ceram Int,2000,26(2):153-158. [12] Dhobale A R,Mohapatra M,Natarajan V.Synthesis and photoluminescence investigations of the white light emitting phosphor,vanadate garnet,Ca2NaMg2V3O12 co-doped with Dy and Sm[J].J Lumin,2015,132(2):293-298. [13] Lee G H,Kang S.Solid-solution red phosphors for white LEDs[J].J Lumin,2011,131(12):2582-2588. [14] 关丽,苗英会,金利涛,等.BaAl2Si2O8∶Eu3+荧光粉的制备及发光性能[J].硅酸盐学报,2011,39(5):779-782. [15] 李可,沈常宇,沈天禛.白光LED用BaMgAl10O17∶Eu2+,Mn2+蓝绿荧光粉[J].中国计量学院报,2011,22(1):22-25. [16] Liu J,Lian H,Shi C.Improved optical photoluminescence by charge compensation in the phosphor system CaMoO4∶Eu3+[J].Optical Materials,2007,29(12):1591-1594. [17] Shi S,Gao J,Zhou J.Effects of charge compensation on the luminescence behavior of Eu3+ activated CaWO4 phosphor[J].Optical Materials,2008,30(10):1616-1620. [18] Zeng Q,He P,Liang H.Luminescence of Eu3+-activated tetra-molybdate red phosphors and their application in near-UV in GaN-based LEDs[J].Materials Chemistry and Physics,2009,118(1):76-80. [19] Setlur A A.Sensitizing Eu3+ with Ce3+ and Tb3+ to make narrow-line red phosphors for light emitting diodes[J].Electrochemical and Solid-State Letters,2012,15(6):25-27. [20] Thangaraju D,Durairajan A,Balaji D,et al.Novel KGd1-(x+y)EuxBiy(W1-zMozO4)2 nanocrystalline red phosphors for tricolor white LEDs[J].Journal of Luminescence,2015,134(3):244-250. [21] Lei J,Yu Y,Li L,et al.Synthesis of Li Eu1-xBix(MoO4)2 red phosphors by sol-gel method and their luminescent properties[J].Journal of Rare Earths,2012,30(4):330-334.