1. 四川大学 材料科学与工程学院, 四川 成都 610065
2. 重庆市高校微纳米材料工程与技术重点实验室 重庆文理学院新材料技术研究院, 重庆 402160
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蒲勇, 赵聪, 敬小龙等. CaGd<sub>2</sub>(MoO<sub>4</sub>)<sub>4</sub>:Eu<sup>3+</sup>,Bi<sup>3+</sup>红色荧光粉的制备及发光性能[J]. 发光学报, 2018,39(8): 1045-1050
PU Yong, ZHAO Cong, JING Xiao-long etc. Synthesis and Luminescence Properties of CaGd<sub>2</sub>(MoO<sub>4</sub>)<sub>4</sub>:Eu<sup>3+</sup>,Bi<sup>3+</sup> Red Phosphors[J]. Chinese Journal of Luminescence, 2018,39(8): 1045-1050
蒲勇, 赵聪, 敬小龙等. CaGd<sub>2</sub>(MoO<sub>4</sub>)<sub>4</sub>:Eu<sup>3+</sup>,Bi<sup>3+</sup>红色荧光粉的制备及发光性能[J]. 发光学报, 2018,39(8): 1045-1050 DOI: 10.3788/fgxb20183908.1045.
PU Yong, ZHAO Cong, JING Xiao-long etc. Synthesis and Luminescence Properties of CaGd<sub>2</sub>(MoO<sub>4</sub>)<sub>4</sub>:Eu<sup>3+</sup>,Bi<sup>3+</sup> Red Phosphors[J]. Chinese Journal of Luminescence, 2018,39(8): 1045-1050 DOI: 10.3788/fgxb20183908.1045.
采用水热法制备了CaGd,2-,x-y,(MoO,4,),4,:,x,Eu,3+,,,y,Bi,3+,(,x,=0.01~2,,y,=0~0.04)系列红色荧光粉。分别用XRD、SEM和荧光分光光度计对样品的晶体结构、微观形貌和发光性能进行了研究。结果表明,样品荧光粉具有体心四方白钨矿结构,属于I4,1,/,a,(88)空间群,15% Eu,3+,和1% Bi,3+,(摩尔分数)的相继掺杂对样品基质晶体结构影响不大。样品粉末颗粒呈类八面体状,粒度比较均一,分散性良好,粒径在3~5 m之间。样品的激发光谱由位于200~350 nm的激发宽带和位于350~550 nm的系列激发峰构成,最强激发峰位于396 nm。发射主峰位于617 nm,对应于Eu ,3+,的,5,D,0,7,F,2,特征跃迁发射。研究未发现Eu,3+,的浓度猝灭现象。Bi,3+,的掺杂能对Eu,3+,起敏化作用,显著提高样品的红光发射和色纯度,其作用类型为交换交互型,最佳掺杂量,y,=0.01。
A series of CaGd,2-,x-y,(MoO,4,),4,:,x,Eu,3+,y,Bi,3+,(,x,=0.01-2,y,=0-0.04) red phosphors were synthesized by a hydrothermal method. The crystal structure, microstructure and luminescent properties of the samples were studied by the use of XRD, SEM and FL spectrophotometer, respectively. The results reveal that the powders with the doping mole frsction of 15% Eu,3+, and 1% Bi,3+, hold the structure of body-centered quartet scheelite which belongs to the space groups of I4,1,/,a,(88). The particles of the sample are relatively uniform and the grain size is 3 to 5 m. The excitation spectra of the samples are made up of a wide excitation band between 200-350 nm and excitation peaks between 350-500 nm. The strongest excitation peak locates at 396 nm, which indicates the sample can be effectively excited by near-UV light. The strongest emission peak locates at 617 nm corresponding to the ,5,D,0,7,F,2, transition of Eu,3+,. The concentration quenching phenomenon of Eu,3+, is not found in the present study. The dope of Bi,3+, can sensitize Eu,3+, to significantly improve the red emission intensity and the color purity of the sample. The best doping mole fraction of Bi,3+, is 1%.
水热法白光LED近紫外CaGd2(MoO4)4:Eu3+Bi3+红色荧光粉
hydrothermal methodwhite LEDsnear-UVCaGd2(MoO4)4:Eu3+Bi3+red phosphors
LIU Y, ZUO L Q, LI J Y. Hydrothermal synthesis and multicolor luminescence properties of Dy3+/Eu3+ co-doped KLa(MoO4)2 phosphors[J]. Ceram. Int., 2016, 42(6):7781-7786.
WANG T M, NONG R, GAO Y, et al.. Coating synthesis and enhanced photoluminescence of NaCl@LiLa(MoO4)2:Eu3+[J]. Mater. Lett., 2017, 208(12):77-81.
CHO Y S, HUH U D. Fine-tuning the emission color of a transparent suspension of SrMoO4:Eu3+,Tb3+ nanophosphors[J]. Bull. Korean Chem. Soc., 2015, 36(1):282-286.
LI Y T, LIU X H. Photoluminescence properties and energy transfer of KY1-xLnx(MoO4)2(Ln=Sm3+,Eu3+) red phosphors[J]. J. Lumin., 2014, 151(7):52-56.
ZUO H Q, LIU Y L, LI J Y, et al.. Synthesis and luminescence properties of Eu3+-doped KLa(MoO4)2 red-emitting phosphor[J]. Superlatt. Microstruct., 2015, 85(9):672-679.
关荣锋, 孙倩, 李勤勤, 等. CaMoO4:Eu3+,Bi3+,Li+红色荧光粉的共沉淀制备与表征[J]. 发光学报, 2013, 34(8):1000-1005. GUAN R F, SUN Q, LI Q Q, et al.. Co-precipitation synthesis and characterization of CaMoO4:Eu3+, Bi3+, Li+ red phosphor[J]. Chin. J. Lumin., 2013, 34(8):1000-1005. (in Chinese)
吴冬妮, 崔瑞瑞, 龚新勇, 等. 新型红色荧光粉NaLa0.7(MoO4)2-x(WO4)x:0.3Eu3+的制备及发光性质研究[J]. 发光学报, 2016, 37(3):274-279. WU D N, CUI R R, GONG X Y, et al.. Synthesis and photoluminescence properties of NaLa0.7(MoO4)2-x(WO4)x:0.3Eu3+ novel red phosphors[J]. Chin. J. Lumin., 2016, 37(3):274-279. (in Chinese)
张清侠, 龙丹丹, 张帆, 等. Bi3+掺杂对CaMoO4:Eu3+荧光粉发光性质的影响[J]. 光谱学与光谱分析, 2013, 33(7):1758-1762. ZHANG Q X, LONG D D, ZHANG F, et al.. The influence of Bi3+ on CaMoO4:Eu3+ phosphor[J]. Spectrosc. Spect. Anal., 2013, 33(7):1758-1762. (in Chinese)
WANG Y Z, LIN C X, ZHENG H, et al.. Fluorescent and chromatic properties of visible-emitting phosphor KLa-(MoO4)2:Sm3+[J]. J. Alloys Compd., 2013, 559(5):123-128.
YANG Z P, DONG H Y, LIU P F, et al.. Photoluminescence properties of Sm3+-doped LiY(MoO4)2 red phosphors[J]. J. Rare Earth, 2014, 32(5):404-408.
WU Z L, ZHANG Y Q, CHEN B J. Energy transfer in KLa(MoO4)2:Sm3+,Eu3+ phosphors[J]. Rare Met. Mater. Eng., 2015, 44(10):2476-2480.
GUO C F, WANG S T, CHEN T, et al.. Preparation of phosphors AEu(MoO4)2(A=Li, Na, K and Ag) by sol-gel method[J]. Appl. Phys. A, 2009, 94:365-371.
YI L H, HE X P, ZHOU L Y, et al.. A potential red phosphor LiGd(MoO4)2:Eu3+ for light-emitting diode application[J]. J. Lumin., 2010, 130(6):1113-1117.
YAN S X, ZHANG J H, ZHANG X, et al.. Enhanced red emissionin CaMoO4:Bi3+,Eu3+[J]. J. Phys. Chem. C, 2007, 111(35):13256-13260.
XIE A, YUAN X M, WANG F X. A potential red-emitting phosphorsscheelite-like triple molybdates LiKGd2(MoO4)4:Eu3+ for white light emitting diode applications[J]. Sci. China Technol. Sci., 2011, 54(1):70-75.
JIN Y P, KYOO S S, HYUN K Y. Synthesis and photoluminescence properties of CaGd2(MoO4)4:Eu3+ red phosphors[J]. Ceram. Int., 2016, 42:5737-5742.
ZUO H Q, LIU Y, LI J Y. Enhancement of red emission in KLa(MoO4)2:Eu3+,Bi3+ phosphor for WLEDs[J]. Ceram. Int., 2015, 41:14834-14838.
LUO M, SUN T Y, WANG J H, et al.. Synthesis of carboxyl-capped and bright YVO4:Eu, Bi nanoparticles and their application in immunochromatographic test strip assay[J]. Mater. Res. Bull., 2013, 48:4454-4459.
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