采用微波辅助共沉淀法制备SrCO3: Eu3+红色荧光粉,并利用XRD、SEM和PL-PLE分别对样品SrCO3: Eu3+的物相、形貌和发光性能进行表征.研究了激发波长以及Eu3+浓度对样品发光性能的影响.结果表明,掺杂Eu3+作为红色发光中心进入到文石型碳酸锶晶格中占据非中心对称的格位.不论是以284 nm为中心的Eu3+-O2-电荷迁移带跃迁激发,还是以393 nm、464 nm的f-f跃迁激发,样品的发射光谱均以614 nm为主,对应于Eu3+的电偶极跃迁5D0→7F2,属于红色发光.随着Eu3+掺杂浓度的增大,发光强度先增加后减小,其中在284 nm激发下的猝灭浓度为3 mol%;在393 nm和 464 nm激发下的猝灭浓度为12 mol%.根据Dexter理论,样品的浓度猝灭机理为电偶极-偶极跃迁.这种红色荧光粉SrCO3: Eu3+有望应用于荧光灯和白光LED领域.
参考文献
| [1] | 陈鸿彬 .高纯度碳酸锶制备[J].化学世界,1990,31(05):202-203. |
| [2] | 冯泉,艾德生,于忠淇,韩跃新.原料纳米化对锶铁氧体断裂韧性的影响[J].磁性材料及器件,2009(02):45-48. |
| [3] | Dafinova R M;Stolanova R K .Fluorescence of Alkaline-earth Carbonates[J].Journal of Materials Science Letters,1987,6:254-256. |
| [4] | Folkerts HF.;Blasse G. .TWO TYPES OF LUMINESCENCE FROM PB2+ IN ALKALINE-EARTH CARBONATES WITH THE ARAGONITE STRUCTURE[J].The journal of physics and chemistry of solids,1996(3):303-306. |
| [5] | Yuexiao Pan;Mingmei Wu;Qiang Su .Synthesis of Eu~(3+)-doped calcium and strontium carbonate phosphors at room temperature[J].Materials Research Bulletin: An International Journal Reporting Research on Crystal Growth and Materials Preparation and Characterization,2003(9/10):1537-1544. |
| [6] | Jun Yang;Xiaoming Liu;Chunxia Li;Zewei Quan;Deyan Kong;Jun Lin .Hydrothermal synthesis of SrCO3:Eu3+/Tb3+ microneedles and their luminescence properties[J].Journal of Crystal Growth,2007(2):480-486. |
| [7] | Zhang, YY;Liu, JL;Zhu, YX;Shang, Y;Yu, M;Huang, X .Hydrothermal synthesis and luminescence properties of core-shell-structured PS@SrCO3:Tb3+ spherical particles[J].Journal of Materials Science,2009(13):3364-3369. |
| [8] | Patra CR;Bhattacharya R;Patra S;Vlahakis NE;Gabashvili A;Koltypin Y;Gedanken A;Mukherjee P;Mukhopadhyay D .Pro-angiogenic properties of europium(III) hydroxide nanorods[J].Advanced Materials,2008(4):753-756. |
| [9] | L.S. Wang;Y.H. Zhou;Z.W. Quan .Formation mechanisms and morphology dependent luminescence properties of Y_2O_3:Eu phosphors prepared by spray pyrolysis process[J].Materials Letters,2005(10):1130-1133. |
| [10] | Xu CY;Watkins BA;Sievers RE;Jing XP;Trowga P;Gibbons CS;Vecht A; .Submicron-sited spherical yttrium oxide based phosphors prepared by supercritical CO2-assisted aerosolization and pyrolysis[J].Applied physics letters,1997(12):1643-1645. |
| [11] | Yan T T;Zhang D S;Shi L Y et al.Reflux Synthesis,Formation Mechanism,and Photoluminescence Performance of Monodisperse Y2O3:Eu3+ Nanospheres[J].Materials Chemistry and Physics,2009,117:234-243. |
| [12] | Haopeng Yang;Dengsong Zhang;Liyi Shi .Synthesis and strong red photoluminescence of europium oxide nanotubes and nanowires using carbon nanotubes as templates[J].Acta materialia,2008(5):955-967. |
| [13] | Yin J B;Zhao X P .Facile Synthesis and the Sensitized Luminescence of Europium Ions-doped Titanate Nanowires[J].Materials Chemistry and Physics,2009,114:561-568. |
| [14] | 刘军,康明,孙蓉,杨定明.高温固相法制备CaCO3：Eu3+,Li+红色荧光粉[J].中国粉体技术,2008(03):28-31. |
| [15] | 康明,刘军,孙蓉.CaCO3基红色荧光粉的合成及其光谱性能分析[J].人工晶体学报,2009(03):715-720. |
| [16] | 康明,刘军,孙蓉,燕文清.低温共沉淀法合成红色荧光粉CaCO3：Eu3+[J].功能材料,2009(08):1258-1262. |
| [17] | KANG Ming,LIU Jun,YIN Guangfu,SUN Rong.Preparation and characterization of Eu3+-doped CaCO3 phosphor by micro-wave synthesis[J].稀有金属（英文版）,2009(05):439-444. |
| [18] | David E;Clark;Willard H S .Microwave Processing of Materials[J].Annual Review of Materials Science,1996,26:299-311. |
| [19] | 张明轩,霍冀川,刘树信,雷永林,吴瑞荣.不同形貌超细碳酸锶粒子制备研究进展[J].化工新型材料,2006(11):5-7,10. |
| [20] | 张思远.稀土离子的光谱学-光谱性质与光谱理论[M].北京:科学出版社,2008:251. |
| [21] | Huang, YL;Zhao, WX;Cao, YG;Jang, KW;Lee, HS;Cho, EJ;Yi, SS .Photoluminescence of Eu3+-doped triple phosphate Ca8MgR(PO4)(7) (R = La, Gd, Y)[J].Journal of Solid State Chemistry,2008(9):2161-2164. |
| [22] | Yunsheng Hu;Weidong Zhuang;Hongqi Ye .A novel red phosphor for white light emitting diodes[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2005(1/2):226-229. |
| [23] | 宋宏伟.稀土掺杂氧化物纳米发光材料研究[J].发光学报,2008(06):921-936. |
| [24] | Liu XM;Jia PY;Lin J;Li GZ .Monodisperse spherical core-shell structured SiO2-CaTiO3 : Pr3+ phosphors for field emission displays[J].Journal of Applied Physics,2006(12):24902-1-24902-7-0. |
| [25] | D. Hreniak;W. Strk;P. Deren .Synthesis and luminescence properties of Eu~(3+)-doped LaAlO_3 nanocrystals[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2006(0):828-830. |
| [26] | 黄秋平,洪樟连,张朋越,樊先平,王民权.稀土硫氧化物发光材料的制备技术[J].材料导报,2006(03):9-11,20. |
| [27] | Dexter D L;Schulman J H .Concentration and Excitation Effects in Multiphonon Non-radiative Transitions of Rare-earth Ions[J].Journal of Chemical Physics,1954,22(05):1063-1067. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%