发光学报
髮光學報
발광학보
CHINESE JOURNAL OF LUMINESCENCE
2013年
10期
1288-1294
,共7页
韩丽%宋超%刘桂霞%王进贤%董相廷
韓麗%宋超%劉桂霞%王進賢%董相廷
한려%송초%류계하%왕진현%동상정
Ca0.8La0.2MoO4%荧光材料%水热合成%多色发光
Ca0.8La0.2MoO4%熒光材料%水熱閤成%多色髮光
Ca0.8La0.2MoO4%형광재료%수열합성%다색발광
Ca0.8La0.2MoO4%luminescent material%hydrothermal preparation%multi-color emitting
采用水热法制备了Ca0.8La0.2-x-yMoO4∶xTb3+,yEu3+荧光材料,并对其结构和发光性能进行了研究.X射线衍射(XRD)分析表明,合成的样品为四方晶系的CaMoO4白钨矿结构,稀土离子La3+、Eu3+、Tb3+的引入不会改变主晶格的结构.荧光光谱表明,与CaMoO4∶Eu3+荧光粉相比,基质中掺杂La后的Ca0.8 La0.15MoO4∶0.05Eu3+样品的616 nm(5D0→7F2)处的特征发射峰明显增强.在285 nm紫外光激发下,Ca0.8La0.16-yMoO4∶0.04Tb3+,yEu3+ (y=0.01,0.03,0.05,0.07)系列样品在545 nm和616 nm处出现的发射峰,分别对应于Tb3+的5D4→7F5跃迁和Eu3+的5D0→7F2跃迁,并且随着Eu3+掺杂量的增加,Tb3+的发射峰逐渐减弱,Eu3+的发射峰逐渐增强,表明该荧光材料中存在着由Tb3+到Eu3+能量传递.随着Ca0.8 La0.16-yMoO4∶0.04Tb3+,yEu3+ (y =0.01,0.03,0.05,0.07)系列样品中激活剂Eu3+掺杂量的增加,荧光粉实现了从绿色→黄绿→黄色→红色的颜色可调.
採用水熱法製備瞭Ca0.8La0.2-x-yMoO4∶xTb3+,yEu3+熒光材料,併對其結構和髮光性能進行瞭研究.X射線衍射(XRD)分析錶明,閤成的樣品為四方晶繫的CaMoO4白鎢礦結構,稀土離子La3+、Eu3+、Tb3+的引入不會改變主晶格的結構.熒光光譜錶明,與CaMoO4∶Eu3+熒光粉相比,基質中摻雜La後的Ca0.8 La0.15MoO4∶0.05Eu3+樣品的616 nm(5D0→7F2)處的特徵髮射峰明顯增彊.在285 nm紫外光激髮下,Ca0.8La0.16-yMoO4∶0.04Tb3+,yEu3+ (y=0.01,0.03,0.05,0.07)繫列樣品在545 nm和616 nm處齣現的髮射峰,分彆對應于Tb3+的5D4→7F5躍遷和Eu3+的5D0→7F2躍遷,併且隨著Eu3+摻雜量的增加,Tb3+的髮射峰逐漸減弱,Eu3+的髮射峰逐漸增彊,錶明該熒光材料中存在著由Tb3+到Eu3+能量傳遞.隨著Ca0.8 La0.16-yMoO4∶0.04Tb3+,yEu3+ (y =0.01,0.03,0.05,0.07)繫列樣品中激活劑Eu3+摻雜量的增加,熒光粉實現瞭從綠色→黃綠→黃色→紅色的顏色可調.
채용수열법제비료Ca0.8La0.2-x-yMoO4∶xTb3+,yEu3+형광재료,병대기결구화발광성능진행료연구.X사선연사(XRD)분석표명,합성적양품위사방정계적CaMoO4백오광결구,희토리자La3+、Eu3+、Tb3+적인입불회개변주정격적결구.형광광보표명,여CaMoO4∶Eu3+형광분상비,기질중참잡La후적Ca0.8 La0.15MoO4∶0.05Eu3+양품적616 nm(5D0→7F2)처적특정발사봉명현증강.재285 nm자외광격발하,Ca0.8La0.16-yMoO4∶0.04Tb3+,yEu3+ (y=0.01,0.03,0.05,0.07)계렬양품재545 nm화616 nm처출현적발사봉,분별대응우Tb3+적5D4→7F5약천화Eu3+적5D0→7F2약천,병차수착Eu3+참잡량적증가,Tb3+적발사봉축점감약,Eu3+적발사봉축점증강,표명해형광재료중존재착유Tb3+도Eu3+능량전체.수착Ca0.8 La0.16-yMoO4∶0.04Tb3+,yEu3+ (y =0.01,0.03,0.05,0.07)계렬양품중격활제Eu3+참잡량적증가,형광분실현료종록색→황록→황색→홍색적안색가조.
