分别以(NH4)2CO3、Na2CO3为沉淀剂,采用水热法合成了Sr2CeO4蓝白光荧光粉.利用热重-差热、红外光谱及X射线衍射分析了不同沉淀剂所得前驱体的热分解过程及目标产物的形成过程;利用扫描电镜、荧光分光光度计分别对荧光粉的微观形貌、发光特性进行了分析表征.结果表明:以(NH4)2CO3、Na2CO3为沉淀剂所得前驱体晶相组成相同,均由Ce2(CO3)2O·H2O、CeCO3OH及SrCO3三相组成,经1000℃下焙烧2h均得到正交晶相的SF2CeO4.以(NH4)2CO3为沉淀剂所得样品呈类球形,分散性较好;以Na2CO3为沉淀剂所得样品呈不规则形状,团聚现象严重.所得Sr2CeO4的激发光谱均是位于200 ~400 nm之间的一个宽带双峰结构,发射光谱均是位于400~600nm之间的一个宽带,最大发射峰位于466nm左右,归属于Ce4+的f→t1g跃迁,呈蓝白光发射.在最大激发波长下,以(NH4)2CO3为沉淀剂所得样品的发光强度相对较大.
参考文献
[1] | Claus Feldmann;Thomas Justel;Cees R. Ronda;Peter J. Schmidt .Inorganic Luminescent Materials: 100 Years of Research and Application[J].Advanced functional materials,2003(7):511-516. |
[2] | Earl Danielson;Martin Devenney;Daniel M. Giaquinta .A Rare-Earth phosphor Containing One-Dimensional chains Identified Through Combinatorial methods[J].Science,1998(5352):837-839. |
[3] | Danielson E.;Giaquinta DM.;Golden JH.;Haushalter RG. McFarland EW.;Poojary DM.;Reaves CM.;Weinberg WH.;Di Wu X.;Devenney M. .X-ray powder structure of Sr2CeO4: a new luminescent material discovered by combinatorial chemistry[J].Journal of Molecular Structure,1998(1/2):229-235. |
[4] | 符史流,戴军,丁球科.SrO-CeO2体系化合物的固相反应机理研究[J].无机材料学报,2006(02):357-362. |
[5] | 魏乐,杨定明,胡文远,胡亚敏,廖其龙.SrCeO3∶Sm3+红色发光粉的制备及发光性能[J].人工晶体学报,2012(01):64-68,84. |
[6] | 翟永清,杨国忠,周雪玲,刘红梅.甘氨酸燃烧法合成Sr2CeO4及其发光性质研究[J].材料科学与工艺,2008(03):370-373. |
[7] | 石士考,栗俊敏,王继业,王瑞芬,周济.Fluorescent Comparison of Sr2CeO4 Prepared from Carbonate and Oxalate Precursor[J].稀土学报(英文版),2004(06):833-836. |
[8] | Toshiyuki Masui;Takanobu Chiga;Nobuhito Imanaka;Gin-ya Adachi .Synthesis and luminescence of Sr_2CeO_4 fine particles[J].Materials Research Bulletin: An International Journal Reporting Research on Crystal Growth and Materials Preparation and Characterization,2003(1):17-24. |
[9] | 王洪洪,陈永生,周建朋,何伟,卢景霄.氧化锌微米棱棒的水热法制备和稀土掺杂[J].人工晶体学报,2012(05):1250-1253. |
[10] | 翟永清,刘亚红,王欣,闫婕,吕佳佩,刘磊.表面活性剂对水热合成Gd2O3∶Eu3+性能的影响[J].人工晶体学报,2011(05):1194-1198. |
[11] | Xianghong He;Weihua Li;Quanfa Zhou .Hydrothermal synthesis and tunable luminescent properties of Sr_(2-x)Dy_xCeO_4 rod-like phosphors derived from co-precipitation precursors[J].Materials Science & Engineering, B. Solid-State Materials for Advanced Technology,2006(1):59-62. |
[12] | J.M. Alia;Y. Diaz de Mera;H.G.M. Edwards;P. Gonzalez Martin;S. Lopez Andres .FT-Raman and infrared spectroscopic study of aragonite-strontianite (Ca_xSr_(1-x) CO_3) solid solution[J].Spectrochimica acta, Part A. Molecular and biomolecular spectroscopy,1997(13):2347-2362. |
[13] | Seema, R.;Nandakumar, K. .A new synthetic pathway of Sr2CeO4 phosphor and its characterization[J].Journal of Luminescence: An Interdisciplinary Journal of Research on Excited State Processes in Condensed Matter,2011(10):2181-2184. |
[14] | 李霞,刘桂霞,董相廷,王进贤.特殊形貌GdF3:Eu3+纳米发光材料的制备及性能[J].高等学校化学学报,2011(01):23-27. |
[15] | Chunxiang Zhang;Wenjun Jiang;Xujie Yang .Synthesis and luminescent property of Sr_2CeO_4 phosphor via EDTA-complexing process[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2009(1/2):287-291. |
[16] | Li L;Zhou SH;Zhang SY .Investigation on charge transfer bands of Ce4+ in Sr2CeO4 blue phosphor[J].Chemical Physics Letters,2008(4-6):283-289. |
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%