为探索新型的白光LED荧光粉材料,采用提拉法生长了Ce2( CO3)3掺杂的Ce3+∶YVO4晶体,并对生长晶体的结构和光谱性能进行了表征.通过XRD测试,确定了由提拉法生长的Ce3+∶YVO4晶体的晶相没有发生变化.Ce3+∶YVO4晶体在450 nm处有一个较宽的发射带,在620 nm处有一个明显的发射峰.分析表明,在Ce3+掺杂的YVO4晶体中,铈离子主要以三价离子的形式存在,但在激发光照射下出现的620 nm发射表明有Ce4+存在,并且Ce4+与配位O2-形成了电荷迁移态(CTS).
参考文献
| [1] | RubinJJ;VanUitertLG.Growth of Large Yttrium Vanadate Single Crystals for Optical Maser Studies[J].Journal of Applied Physics,1966:2920-2921. |
| [2] | 孟宪林,张怀金,祝俐,吕孟凯.掺钕钒酸钇单晶光谱与激光特性[J].人工晶体学报,1999(02):135-139. |
| [3] | 王继扬,于浩海,张怀金,李静,宗楠,许祖彦.激光自倍频晶体研究和应用进展[J].物理学进展,2011(02):91-110. |
| [4] | 阮永丰,卢树华,张守超,李广慧,李文润.掺铈钒酸钇晶体的生长及光学性质的研究[J].人工晶体学报,2006(03):501-503,500. |
| [5] | 周禾丰,侯建新,贾明理,王华,徐阳,卫芳芳.YAG： Ce3+,Pr3+荧光粉的制备和光谱特性研究[J].人工晶体学报,2009(03):629-632. |
| [6] | Yuexiao Pan;Mingmei Wu;Qiang Su .Comparative investigation on synthesis and photoluminescence of YAG:Ce phosphor[J].Materials Science & Engineering, B. Solid-State Materials for Advanced Technology,2004(3):251-256. |
| [7] | 曾雄辉,赵广军,张连翰,何晓明,杭寅,李红军,徐军.铝酸镧单晶体中Ce3+的能级结构和荧光特性[J].物理学报,2005(02):612-616. |
| [8] | 袁剑辉;刘行任 .Ca3Al2 M3O12(M =Si,Ge)石榴石中Ce3+的离子荧光光谱[J].光谱学与光谱分析,1998,18(01):11-14. |
| [9] | 张思远;任金生.三价铈离子5d态的晶场参数和能级位移[J].发光学报,1989(02):101-105. |
| [10] | Blasse G;Bril A .Investigation of Some Ce3+-activated Phosphors[J].Journal of Chemical Physics,1967,47(12):5139-5145. |
| [11] | Nishiura S;Tanabe S;Fujimoto Y et al.Properties of Trsnsparent Ce:YAG Ceramic Phosphors for White LED[J].Optical Materials,2011,33(05):688-691. |
| [12] | 林海;刘行仁 .三价铈离子在氯硅酸镁钙中的晶体学格位研究[J].无机材料学报,1997,12(04):595-598. |
| [13] | 黄朝红,张庆礼,周东方,王爱华,殷绍唐,施朝淑.Ce3+：YAG单晶闪烁体的激发和发光特性[J].人工晶体学报,2003(04):295-299. |
| [14] | Weber M J .Optical Spectra of Ce3 + and Ce3 +-sensitized Fluorescence in YAlO3[J].Journal of Applied Physics,1973,44(07):3205-3208. |
| [15] | Orera V M;Merino R I;Pena F .Ce3 +-Ce4 + Conversion in Ceria-doped Zirconia Single Crystals Induced by Oxido-reduction Treatments[J].Solid Stateions,1994,72:224-231. |
| [16] | Danielson E;Devenney M;Ginquinta D M et al.A Rare-earth Phosphor Containing One-dimensional Chains Identified through Combinatorial Material Methods[J].Science,1998,279:837-839. |
| [17] | Fabris S;de Gironcoli S;Baroni S;Vicario G;Balducci G .Taming multiple valency with density functionals: A case study of defective ceria[J].Physical review, B. Condensed matter and materials physics,2005(4):1102-1-1102-4-0. |
| [18] | D.R.Lide.CRC Handbook of Chemistry and Physics[M].CRC,Boca Raton,1993 |
| [19] | 兰桂刚;李振祥 .稀土双氧配合物的电子结构研究[J].中国稀土学报,1992,10(01):9-12. |
| [20] | 赵良仲.Ce（Ⅳ）和Ce（Ⅲ）化合物系列的X射线光电子能谱研究[J].物理学报,1989(06):987-990. |
| [21] | Ebendorff-Heidepriem H;Ehrt D .Formation and UV Absorption of Cerium,Europium and Terbium Ions in Different Valencies in Glasse[J].Optical Materials,2000,15:7-25. |
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