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1、 v (1 S )32(2) :213 216,2009Journal of Shanxi University( Nat.Sci. Ed.)nullnullnull null c I | :0253null2395(2009) 02null0213null04null 红色长余辉发光材料CaTiO3: Pr3+ 的制备和发光性能研究齐晓霞( v , 030051)K null 1 :采用稀土直接掺杂工艺和高温固相法,制备出发光亮度较高a余辉性能较为优良的红色长余辉发光材料CaT iO3: Pr3+ ,并对其发光性能进行了研究.经光谱分析的结果发现,所制备的发光粉体其激发和发射光谱均为宽带光谱
2、,CaTiO3:Pr3+ 属于 Pr3+ 的发光,对应的激发峰nullmax为 323 nm;发射峰nullmax为610 nm.该发光粉体的余辉衰减过程存在快速衰减和慢衰减两个过程,余辉时间为5 min.此外还考察了烧结温度a稀土掺杂量对此发光粉体发光性能的影响.1 o M :长余辉;发光材料;CaTiO3:Pr3+ ;高温固相法 m s | :T Q050.4null null null D S M :A0null K * MS: Eu2+ , ? , s J 1 . 1997 M ,Royce M. R. 2? C Pr3+ 8 + . , Diallo P. T. 3, 4s ,i 1
3、 % M Q E null E ! CaTiO3: Pr3+ .S = M 9 Pr3+ 8 5null8 . ? , z 0 , ? ; 9 B , ? B 4 . ? ; i s 4 ? r o 1 i l . H q / CaTiO3: Pr3+ ? ; , CaTiO3: Pr3+ ? ; a? ; + ,) M Pr3+ i ? ; , ; , W , .CaTiO3:Pr3+ # ? ; + J . 2 ,1998,14( 5) :45null47. 6 null , ,R null , ; . CaT iO3: Pr3+ 0 J W J. ; 0 ! ; , 2004,15( 3
4、):332null336. 7 null ) , f , null . CaT iO3: Pr3+ ; 8 ? J . i v , 2004, 27(7): 53null55. 8 null , W , * , . Pr3+ ? ; 1 J . 2 = S v 1 S ,2005, 28( 1) : 48null51.Preparation and Luminous Performances of CaTiO3:Pr3+ Luminous MaterialsQI Xiaonullxia( Dep artment of P hysics, North University of China, T
5、aiyuan 030051, China)Abstract: CaTiO3: Pr3+ luminous materials with high brightness and long persistence were synthesized bysolid sintering technology. The factors that influence the luminous performance and preparation technologywere discussed. The luminous material exhibits broadband peaks in both
6、 the excitation and emission specnulltra. The excitation peak was 323 nm, and the main emission peak was around 610 nm. The results indicatedthat the luminescence of these materials was due to 1 D2null3 H4 transition of Pr3+ . Additionally, the long pernullsistence of the CaTiO3: Pr3+ luminous mater
7、ials can last for over 5 min in the light perception of the humaneye. Effects of such factors as the temperature in the sintering process, different proportions of Pr on therelative luminescent intensity were studied.Key words: long persistence; luminous materials; CaTiO3: Pr3+ ; solid sintering technology216 v (1 S ) null null null null null null null null null null null null null null null 32( 2) null 2009null
