采用固相法成功合成了具有β-Ca3(PO4)2结构的发光材料 Ca8 MgY (PO4)7∶Re3+(Re3+=Eu3+,Ce3+,Tb3+)。XRD、FT-IR 及 TG-DSC 的测试结果表明,该发光材料的最佳烧结温度为1200℃。PL测试结果表明,在252 nm 紫外光激发下,Ca8 MgY (PO4)7∶Eu3+呈现 Eu3+的特征发射,其中以位于612 nm红光发射为主(5 D0-7 F2),Eu3+的最佳掺杂浓度为5.0%(摩尔分数)。在295 nm 紫外光激发下, Ce3+激活的Ca8MgY(PO4)7由峰值位于363 nm的带状5d1-4f1发射为主,Ce3+的最佳掺杂浓度为1.0%(摩尔分数)。在228 nm紫外光激发下,低掺杂浓度的Ca8 MgY(PO4)7∶Tb3+以位于5 D3-7 FJ 的蓝光发射为主,高掺杂浓度的 Ca8MgY(PO4)7∶Tb3+以5D4-7FJ绿光发射为主,这是由于 Tb3+的交叉弛豫造成的。Tb3+的最佳掺杂浓度为7.0%(摩尔分数)。
β-Ca3 (PO4 )2 structured Ca8 MgY(PO4 )7∶Re3+(Re3+=Eu3+,Ce3+,Tb3+)has been prepared by solid state method.The results of XRD,FT-IR,and TG-DSC characterization indicated that the optimum synthesis temperature was at 1 200 ℃.PL characterization indicated that under 252 nm ultraviolet irradiation,Ca8 MgY (PO4)7∶Eu3+ phosphor showed the characteristic emission of Eu3+,dominated by the emission at 612 nm, which was ascribed to 5 D0-7 F2 transition of Eu3+,the optimum doping concentration of Eu3+ was 5.0mol%. Under 295 nm ultraviolet irradiation,Ca8MgY(PO4)7∶Ce3+ phosphor showed a band emission with maximum at 363 nm,which was originated from 5d1-4f1 transition of Ce3+,the optimum doping concentration of Ce3+ was 1.0mol%.Under the irradiation of ultraviolet at 228 nm,the emission of Ca8MgY(PO4)7∶Tb3+ was dominated by blue emission ascribed to 5 D3-7 FJ at lower doping concentration,while at higher concentration,the emission was dominated by green emission ascribed to 5 D4-7 FJ .This phenomenon was due to the crossing-relaxation of Tb3+.The optimum doping concentration of Tb3+ was 7.0mol%.
参考文献
| [1] | Hong Guangyan .Efficient rare earth luminescent material[J].Journal of Functional Materials,1991,22(02):100-128. |
| [2] | Yim Dong Kyun;Cho In-Sun;Lee Chan Woo et al.Prep-aration and photoluminescence properties ofγ-KCaPO4:Eu2+ phosphors for near UV-based white LEDs[J].Opti-cal Materials,2011,33:1036-1040. |
| [3] | Han Bing;Liang Hongbin;Hi Haiyong et al.Intense red light emission of Eu3+-doped LiGd(PO3)4 for mercu-ry-free lamps and plasma display panels application[J].Optics Express,2009,17(09):7138-7144. |
| [4] | Hua Lai;Amurisana Bao;Yuming Yang .UV Luminescence Property of YPO4:RE(RE = Ce~(3+),Tb~(3+))[J].The journal of physical chemistry, C. Nanomaterials and interfaces,2008(1):282-286. |
| [5] | Liang Hongbin;Tao Ye;Xu Jianhua et al.Photolumines-cence of Ce3+,Pr3+ and Tb3+ activated Sr3 Ln(PO4)3 uder VUV-UV excitation[J].Journal of Solid State Chemis-try,2004,177(03):901-908. |
| [6] | 苏锵,梁宏斌,陶冶,王淑彬.稀土离子的高能光谱[J].中国稀土学报,2001(06):481-486. |
| [7] | Xueyan Wu;Hongpeng You;Hongtao Cui .Vacuum ultraviolet optical properties of (La, Gd)PO_4:RE~3+(RE=Eu, Tb)[J].Materials Research Bulletin: An International Journal Reporting Research on Crystal Growth and Materials Preparation and Characterization,2002(9):1531-1538. |
| [8] | K N Shinde,S J Dhoble,Animesh Kumar.Combustion synthesis of Ce3+, Eu3+ and Dy3+ activated NaCaPO4 phosphors[J].稀土学报（英文版）,2011(06):527-535. |
| [9] | Yu, J.;Guo, C.;Ren, Z.;Bai, J. .Photoluminescence of double-color-emitting phosphor Ca_5(PO _4)_3Cl:Eu~2, Mn~2 for near-UV LED[J].Optics & Laser Technology,2011(4):762-766. |
| [10] | Linghong Yi;Liya Zhou;Fuzhong Gong;Yuwei Lan;Zhangfa Tong;Jianhua Sun .Preparation of SrZn_2(PO_4)_2:Eu~(2+),Mn~(2+) phosphor and its photoluminescent properties[J].Materials Science & Engineering, B. Solid-State Materials for Advanced Technology,2010(2):132-135. |
| [11] | Hou Dejian;Liang Hongbin;Xie Mubiao et al.Bright grren-emitting,energy transfer and quantum cutting of Ba3 Ln(PO4)3:Tb3+(Ln=La,Gd)under VUV-UV ex-citation[J].Optics Express,2011,19(12):11071-11083. |
| [12] | Lazoryak B I;Strunenkova T V;Golubev V N et al.Tri-ple phosphates of calcium[J].Materials Research Bulle-tin,1996,31(02):207-216. |
| [13] | Schroeder L W;Dickens B;Browns W E .Crystallo-graphic studies of the role of Mg as a stabilizing lmpurity inβ-Ca3(PO4)2 Ⅱ.Refinement of Mg-containingβ-Ca3(PO4)2[J].Journal of Solid State Chemistry,1977,22:253-262. |
| [14] | Belik A A;Yanov O V;Lazoryak B I .Synthesis and crystal structure of Ca9 Cu1.5(PO4)7 and reinvestigation of Ca9.5Cu(PO4)7[J].Materials Research Bulletin,2001,36:1863-1871. |
| [15] | Teterskii A V;Stefanovich Yu S;Lazoryak B I et al.Whitlockite solid solutions Ca9-xMxR(PO4)7(x=1, 1.5;M=Mg,Zn,Cd;R = Ln,Y)with antiferroelec-tric properties[J].Russian Journal of Inorganic Chemis-try,2007,52(03):308-314. |
| [16] | Lazoryak B I;Strunenkova T V;Vovk E A et al.The new phosphates Ca9 MLn2/3(PO4)7(M=Li,Na;Ln =Rare earth,Y,Bi)[J].Materials Research Bulletin,1996,31(06):665-671. |
| [17] | Lecointre, A.;Bessire, A.;Viana, B.;A?t Benhamou, R.;Gourier, D. .Thermally stimulated luminescence of Ca_3(PO_4) _2 and Ca_9Ln(PO_4)_7 (Ln = Pr, Eu, Tb, Dy, Ho, Er, Lu)[J].Radiation measurements,2010(3/6):273-276. |
| [18] | A.A.BeIik;V.A. Morozov;S.S. Khasanov .CRYSTAL STRUCTURES OF NEW TRIPLE Ca_9COM(PO_4)_7 (M = Li, Na, K) PHOSPHATES[J].Materials Research Bulletin: An International Journal Reporting Research on Crystal Growth and Materials Preparation and Characterization,1999(6):883-893. |
| [19] | 水淼,岳林海,刘清,徐铸德,郑遗凡,丁成豪.纳米CaCO3微晶的晶格畸变和反常红外特性[J].无机化学学报,1999(06):715-720. |
| [20] | Jin Dalai;Yue Linhai;Xu Zhude .Infrared and Raman analysis of spherical CaCO3 composite[J].Chinese Journal of Inorganic Chemistry,2004,20(06):715-720. |
| [21] | Breitinger D K;Brehm G;Mohr J et al.Vibrational spec-tra of synthetic ctandallinte-type minerals-optical and in-elastic neutron scattering spectra[J].Journal of Raman Spectroscopy,2006,37:208-216. |
| [22] | Zhang Mingchun;Zhang Xinsheng;Wang Haihong.Thermal stability of ammonium dihydrogen phosphate[J].Phos-phate and Compound Fertilizer,1995(01):24-26. |
| [23] | 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. |
| [24] | Yang Zhiping;Yu Hongwei;Ma Shuyuan et al.Prepa-ration and luminescent of red BaZn2(PO4)2:Eu2+phosphor[J].Journal of Functional Materials and De-vices,2011,17(01):36-39. |
| [25] | Yang HC;Li CY;He H;Zhang GB;Qi ZM;Su Q .Luminescent properties of RE3+-activated CaAl2B2O7 (RE = Tb, Ce) in VUV-visible region[J].Journal of Luminescence: An Interdisciplinary Journal of Research on Excited State Processes in Condensed Matter,2007(2):235-240. |
| [26] | Blasse G;Grabmaier B C.Luminescent materials[M].Berlin Heidelberg:Springer-Verlag,1994:101-102. |
| [27] | Blasse G;Bril A .Investigations of Tb3+-activated phos-phors[J].Phillips Research Reports,1967,22:481-504. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%