采用高温固相法制备了碱土金属离子(Mg2+,Ca2+,Ba2+)掺杂的SrAl2O4:Eu2+,Dy3+长余辉荧光粉.XRD谱分析表明,随着基质中掺人的碱土金属离子(Mg2+,Ca2+,Ba2+)浓度增加,基质晶格常数也随之发生变化.Mg2+,Ca2+和Ba2+3种碱土离子在SrAl2O4中的固溶范围分别为40%,15%和30%.光谱分析则表明在固溶范围内随着掺杂Mg3+,Ca2+和Ba2+浓度的增大,样品的发射峰值会在480～530 nm范围出现规律性移动.适当浓度的Mg2+,Ba2+掺杂会不同程度地提高样品的发光强度,而Ca2+的掺杂则会降低发光强度.但是碱土金属离子(Mg2+,Ca2+,Ba2+)的掺杂并不能延长SrAl2O4:Eu2+,Dy3+荧光粉的余辉时间.
参考文献
| [1] | Palilla F C;Levine A K;Tomkus M R .Fluorescent properties of alkaline earth aluminates of the type MAl2O4 activated by divalent europium[J].Journal of Electrochem Sot,1968,115(06):642. |
| [2] | Matsuzawa T.;Takeuchi N.;Murayama Y.;Aoki Y. .NEW LONG PHOSPHORESCENT PHOSPHOR WITH HIGH BRIGHTNESS, SRAL2O4-EU2+,DY3+[J].Journal of the Electrochemical Society,1996(8):2670-2673. |
| [3] | Takasaki H;Tanabe S;Hanada T .Long-lasting afterglow characteristics of Eu,Dy codoped SrO-Al2O3 phosphor[J].Journal of the Ceramic Society of Japan,1996,104(04):322. |
| [4] | 罗昔贤,于晶杰,林广旭,肖志强,段锦霞,肖志国.长余辉发光材料研究进展[J].发光学报,2002(05):497-502. |
| [5] | 肖志国.蓄光型发光材料及其制品[M].北京:化学工业出版社,2002:90. |
| [6] | Chang M K;Pits K;Kam C H .Photoluminescence of sol-gelderived Y2O3:Eu3+ thin-film phosphors with Mg2+ and Al3+ codoping[J].Applied Physics A:Materials Science and Processing,2004,79:433. |
| [7] | Huan Jiao;Fuhui Liao;Shujian Tian .Influence of Rare Earth Sc and La to the Luminescent Properties of FED Blue Phosphor Y_2SiO_5:Ce[J].Journal of the Electrochemical Society,2004(7):J39-J42. |
| [8] | T Kim Anh;L Quoc Mirth;N Vu;T Thu Huong N Thanh Huong C Barthou W Strek .Nanomaterials containing rareearth ions Tb,Eu,Er and Yb:preparation,optical properties and application potential[J].Journal of Luminescence,2003,102-103:391. |
| [9] | 庄卫东;赵春雷;滕晓明;畅永锋,何华强 .一种高亮度铝酸盐长时发光材料及其制备方法[P].CN 200410000749,2005-01-05. |
| [10] | 何大伟;李少霞;刘春棠;刘端阳,史艳宁,梁忠益,刘红利,沈芳 .一种长余辉荧光粉及其制备方法[P].CN 2004100004722,2005-01-05. |
| [11] | 仵小燕,张金朝,宋鹂.掺铽的铝酸锶铕镝磷光体的发光特性及晶相分析[J].玻璃与搪瓷,2005(03):7-10,14. |
| [12] | 仵小燕,张金朝,宋鹂.掺钆的铝酸锶铕镝磷光体的发光特性及晶相分析[J].硅酸盐通报,2005(01):118-120. |
| [13] | ChanLite;HwangChii-Shyang;Sun I-Lei;Chan In-Gann .Luminesconce and chromaticity of alkaline earth aluminate M<,x |
| [14] | Dong C .Powder X Repot[R].Beijing:Instute of Physics.Chinese Academy of Sciences,1997. |
| [15] | Prodjesontoso A K;Kennedy B J .Synthesis and evolution d the crystalline phase in CaxSr1-xAl2O4[J].Journal of Solid State Chemistry,2002,168:229. |
| [16] | Shanno R D .Revised effective ionic and sySTematic studies of interatomic distances in halides and chalcogenides[J].Acta Crystallographica,1976,A32:751. |
| [17] | Chen Li-Te;Hwong Chii-Shyang;Chen In-Gann;Chang ShoonJinn .Chromaticity of inhomogeneous broadening effect on CaxSr《,1-x.Al2O4:Eu2+ phosphor[J].Journal of Alloys and Compounds,2006,426:395. |
| [18] | Ryu H;Singh BK;Bartwal KS .Effect of Sr substitution on photoluminescent properties of BaAl2O4 : Eu2+, Dy3+[J].Physica, B. Condensed Matter,2008(1):126-130. |
| [19] | 顾玉芬,靳正国,田勃然.（Sr1-xMx）Al2O4（M=Ca,Ba）∶Eu发光材料的研究[J].稀土,2004(06):45-47,59. |
| [20] | Frederic Claban;Xavier Rocquefelte;Stephane Jobic;PhilippeDeniard Myung-Hwan Whangbo Alain Garcia Thierry Le Merc-ier .On the phosphorescence mechanism in SrAI2O4:Eu2+its codoped derivatives[J].Solid State Sciences,2007,9:608. |
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