光谱学与光谱分析
光譜學與光譜分析
광보학여광보분석
SPECTROSCOPY AND SPECTRAL ANALYSIS
2011年
9期
2341-2345
,共5页
康逢文%胡义华%王银海%吴浩怡%牟中飞%居桂方%符楚君
康逢文%鬍義華%王銀海%吳浩怡%牟中飛%居桂方%符楚君
강봉문%호의화%왕은해%오호이%모중비%거계방%부초군
红色荧光粉%Eu3+,Bi3+掺杂%电荷补偿
紅色熒光粉%Eu3+,Bi3+摻雜%電荷補償
홍색형광분%Eu3+,Bi3+참잡%전하보상
采用高温固相法制备系列红色荧光粉Naz Ca1-x-2y-zBiyMoO4 ∶ Eu3+x+y (y,z=0,x=0.24,0.26,0.30,0.34,0.38； x=0.30,y=0.01,0.02,0.03,0.04,0.05,0.06,0.07,z=0； x=0.30,y=0.04,z=0.38).用X射线粉末衍射(XRD)法测试了所制样品晶相结构.采用荧光光谱仪对样品的发光性能进行了表征,结果表明:当Eu3+单掺杂量浓度x=0.30时,荧光粉(Ca0.70 MoO4∶Eu3+0.30)的发光强度最强；当Eu3+-Bi3+共掺杂量浓度y=0.03时,电荷迁移带(CTB)强度达到最强,而对于Eu3+特征发射峰,当共掺杂浓度y＜0.03时,位于393 nm处的激发峰强度比464 nm强,共掺浓度y＞0.03时,464 nm峰比393 nm峰强,共掺浓度为y=0.04时,393和464 nm处两峰位置强度都达到最强.作为电荷补尝剂的Na2 CO3掺入上述荧光粉中后,荧光粉激发和发射强度明显地增强.结果表明,通过调节Bi3+ /Eu3+掺杂比例可以改变位于近紫外光393 nm和蓝光区464 nm处激发光相对强度.
採用高溫固相法製備繫列紅色熒光粉Naz Ca1-x-2y-zBiyMoO4 ∶ Eu3+x+y (y,z=0,x=0.24,0.26,0.30,0.34,0.38； x=0.30,y=0.01,0.02,0.03,0.04,0.05,0.06,0.07,z=0； x=0.30,y=0.04,z=0.38).用X射線粉末衍射(XRD)法測試瞭所製樣品晶相結構.採用熒光光譜儀對樣品的髮光性能進行瞭錶徵,結果錶明:噹Eu3+單摻雜量濃度x=0.30時,熒光粉(Ca0.70 MoO4∶Eu3+0.30)的髮光彊度最彊；噹Eu3+-Bi3+共摻雜量濃度y=0.03時,電荷遷移帶(CTB)彊度達到最彊,而對于Eu3+特徵髮射峰,噹共摻雜濃度y＜0.03時,位于393 nm處的激髮峰彊度比464 nm彊,共摻濃度y＞0.03時,464 nm峰比393 nm峰彊,共摻濃度為y=0.04時,393和464 nm處兩峰位置彊度都達到最彊.作為電荷補嘗劑的Na2 CO3摻入上述熒光粉中後,熒光粉激髮和髮射彊度明顯地增彊.結果錶明,通過調節Bi3+ /Eu3+摻雜比例可以改變位于近紫外光393 nm和藍光區464 nm處激髮光相對彊度.
채용고온고상법제비계렬홍색형광분Naz Ca1-x-2y-zBiyMoO4 ∶ Eu3+x+y (y,z=0,x=0.24,0.26,0.30,0.34,0.38； x=0.30,y=0.01,0.02,0.03,0.04,0.05,0.06,0.07,z=0； x=0.30,y=0.04,z=0.38).용X사선분말연사(XRD)법측시료소제양품정상결구.채용형광광보의대양품적발광성능진행료표정,결과표명:당Eu3+단참잡량농도x=0.30시,형광분(Ca0.70 MoO4∶Eu3+0.30)적발광강도최강；당Eu3+-Bi3+공참잡량농도y=0.03시,전하천이대(CTB)강도체도최강,이대우Eu3+특정발사봉,당공참잡농도y＜0.03시,위우393 nm처적격발봉강도비464 nm강,공참농도y＞0.03시,464 nm봉비393 nm봉강,공참농도위y=0.04시,393화464 nm처량봉위치강도도체도최강.작위전하보상제적Na2 CO3참입상술형광분중후,형광분격발화발사강도명현지증강.결과표명,통과조절Bi3+ /Eu3+참잡비례가이개변위우근자외광393 nm화람광구464 nm처격발광상대강도.
