材料导报
材料導報
재료도보
MATERIALS REVIEW
2010年
4期
11-13
,共3页
杨伟%张君诚%王旭升%姚熹
楊偉%張君誠%王旭升%姚熹
양위%장군성%왕욱승%요희
光致发光%CaTiO_3%Pr~(3+)%Zr%替代
光緻髮光%CaTiO_3%Pr~(3+)%Zr%替代
광치발광%CaTiO_3%Pr~(3+)%Zr%체대
photoluminescence%CaTiO_3%Pr~(3+)%Zr%doping
制备了不同Zr/Ti比的CaTi1-xZrxO3:Pr3+(x=0～0.07)系列红色发光材料.采用X射线衍射检测了样品结构,测量了样品的激发光谱、发射光谱和反射光谱特性,讨论了B位Zr掺杂对CaTiO_3:Pr3+发光性能的影响.结果表明,Zr掺杂使样品在612nm处的红光发射强度大大提高.当x=0.025时,样品发光强度达到最强,是CaTiO_3:Pr3+发光强度的299%.发光强度的提高是由于Zr的加入使基质中电荷转移态位置处于导带和Pr3+的4f5d能级之间,使能量传递通道得到增加而导致的.
製備瞭不同Zr/Ti比的CaTi1-xZrxO3:Pr3+(x=0～0.07)繫列紅色髮光材料.採用X射線衍射檢測瞭樣品結構,測量瞭樣品的激髮光譜、髮射光譜和反射光譜特性,討論瞭B位Zr摻雜對CaTiO_3:Pr3+髮光性能的影響.結果錶明,Zr摻雜使樣品在612nm處的紅光髮射彊度大大提高.噹x=0.025時,樣品髮光彊度達到最彊,是CaTiO_3:Pr3+髮光彊度的299%.髮光彊度的提高是由于Zr的加入使基質中電荷轉移態位置處于導帶和Pr3+的4f5d能級之間,使能量傳遞通道得到增加而導緻的.
제비료불동Zr/Ti비적CaTi1-xZrxO3:Pr3+(x=0～0.07)계렬홍색발광재료.채용X사선연사검측료양품결구,측량료양품적격발광보、발사광보화반사광보특성,토론료B위Zr참잡대CaTiO_3:Pr3+발광성능적영향.결과표명,Zr참잡사양품재612nm처적홍광발사강도대대제고.당x=0.025시,양품발광강도체도최강,시CaTiO_3:Pr3+발광강도적299%.발광강도적제고시유우Zr적가입사기질중전하전이태위치처우도대화Pr3+적4f5d능급지간,사능량전체통도득도증가이도치적.
Red phosphors CaTi_(1-x)Zr_xO_3:Pr~(3+)(x=0～0.07) are prepared by solid state reaction route.XRD measurements confirm that the material belongs to orthorhombic structure.Luminescent properties are studied with excitation spectra,emission spectra and reflective spectra.Red emission at 612nm is greatly enhanced.It achieves maximum value in CaTi_(0.975)Zr_(0.025)O_3:Pr~(3+) sample,higher by 299% than CaTiO_3 t Pr~(3+).Enhancement of red emission in Zr added CaTiO_3:Pr~(3+) is inferred to originate from improvement of Pr~(3+) 4f5d capture probability to electrons in the host conduction band and charge transfer state.
