采用沉淀-燃烧法结合超声波技术合成了小颗粒Sr3( PO4)2:Tb3+荧光粉,测量了其光谱特性.在Sr3 (PO4)2:Tb3+体系中观察到Tb3+的特征发射,峰值波长分别为489,542,584,620 nm,分别对应于Tb3+ 的5D4→7F6、5D4→7F5、5D4→7F4和5D4→7F3跃迁,其中542 nm处的绿色发射最强.激发光谱由4f7 5d1宽带吸收(200～280 nm)和4f→4f电子跃迁吸收(280～390nm和475～500nm)组成,可被近紫外发光二极管(NUV-LED)有效激发.采用R+ (R=Li,Na,K)作为电荷补偿剂,结果表明:Li+作为电荷补偿剂使样品发光强度提高了31％,Na+和K+的掺入则降低了粉体在近紫外区的吸收.
参考文献
| [1] | 谢安,袁曦明,王娟娟,等.白光LED用红色荧光粉LiEu1-xY(WO4)0.5(MO4)1.5的制备及其发光性能研究[J].中国科学E辑:技术科学,2009,39(6):1063-1068. |
| [2] | Wu Z C,Liu J,Hou W G,et al.A new single-host white-light-emitting BaSrMg(PO4)2:Eu2+ phosphor for white light-emitting diodes[J].J.Alloy.Compd.,2010,498(2):139-142. |
| [3] | 桑石云,王细凤,夏威,等.白光LED用硅酸盐基质发光粉的制备及其封装特性[J].发光学报,2009,30(4):503-508. |
| [4] | 高飞,梁利芳,郭崇峰.LED用红色发光材料Li3 Ba2 Lr3-x Eux (MoO4)8的制备及性能[J].发光学报,2009,30(5):610-616. |
| [5] | 杨志平,王凤和,郭颖楠,等.紫外激发的LiCaPO4:Eu2+蓝色发光粉的发光特性[J].发光学报,2010,31(2):181-184. |
| [6] | Guo Y,Sun M,Guo W M,et al.Luminescent properties of Eu3+ activated tungstate based novel red-emitting phosphors[J].Optlaser.Technol.,2010,42(8):1328-1331. |
| [7] | Park S,Zhen Z,Park D H.Preparation of Eu-doped LaPO4 films using successive ionic layer adsorption and reaction[J].Mater.Lett.,2010,64(16):1861-1864. |
| [8] | Liang H B,Tao Y,Su Q,etal.VUV-UV photoluminescence spectra of strontium orthophosphate doped with rare earth ions[J].J.Solid.State.Chem.,2002,167(2):435-440. |
| [9] | Lei Y Z,Zou Q,Du D H.Energy transfer between Ce3+ and Eu2+ in doped KSrPO4[J].Appl.Phys.A,2009,97(3):635-639. |
| [10] | Wu Z C,Shi J,Wang J,et al.A novel blue-emitting phosphor LiSrPO4:Eu2+ for white LEDs[J].J.Solid.State.Chem.,2006,179(8):2356-2360. |
| [11] | 尚淑娟,袁曦明,王永钱,等.超声分散技术在制备小颗粒(Y,Gd) BO3:Eu3+粉体中的应用[J].液晶与显示,2010,25(2):186-191. |
| [12] | 张然,朱卫华,周桃俊,等.燃烧法合成BaMgAl10 C17:Eu2+荧光体及发光性能的研究[J].液晶与显示,2007,22(1):32-36. |
| [13] | 郝艳,王育华,张占辉.Zn2 SiO4:Mn2+荧光粉的燃烧法合成及其发光特性[J].发光学报,2004,25(4):441-445. |
| [14] | Wen F S,Chen J S,Moon J H,et al.Hydrothermal synthesis and luminescent properties of Sb3+-doped Sr3 (PO4) 2[J].J.Solid.State.Chem.,2004,177(9):3114-3118. |
| [15] | Li P L,Pang L B,Wang Z J,et al.Luminescent characteristics of LiBaBO3:Tb3+ green phosphor for white LED[J].J.Alloy.Compd.,2009,478(1-2):813-815. |
| [16] | Li X,Yang Z P,Guan L,et al.Synthesis and luminescent properties of CaMoO4:Tb3+,R+ (Li+,Na+,K+)[J].J.Alloy.Compd.,2009,478(1-2):684-686. |
| [17] | Li C X,Yang J,Quan Z W,et al.Different microstructures of β-NaYF4 fabricated by hydrothermal process:Effects of pH values and fluoride sources[J].Chem.Mater.,2007,19(20):4933-4942. |
| [18] | Kim Y K,Choi S,Jung H K.Photoluminescence properties of Eu2+ and Mn2+-activated BaMgP2O7 as a potential red phosphor for white-emission[J].J.Lumin.,2010,130(1):60-64. |
| [19] | Li F,Wang M,Mi C C,et al.Polyol-mediated synthesis and luminescence properties of CePO4:Tb3+ Nanospindles[J].J.Alloy.Compd.,2009,486(1-2):L37-L39. |
| [20] | Huang J S,Gao R,Lu Z G,et al.Sol-gel preparation and photoluminescence enhancement of Li+ and Eu3+ codoped YPO4 nanophosphors[J].Opt.Mater,2010,32(9):857-861. |
| [21] | Zhang X M,Li W L,Shi L,et al.Photoluminescence properties of blue-emitting Li4SrCa(SiO4)2:Eu2+ phosphor for solid-state lighting[J].Appl.Phys.B,2010,99(1-2):279-284. |
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