光学学报
光學學報
광학학보
ACTA OPTICA SINICA
2005年
12期
1659-1663
,共5页
段忠超%张军杰%何冬兵%戴世勋%胡丽丽
段忠超%張軍傑%何鼕兵%戴世勛%鬍麗麗
단충초%장군걸%하동병%대세훈%호려려
光学材料%上转换发光%辐射跃迁%稀土离子%氧氟玻璃
光學材料%上轉換髮光%輻射躍遷%稀土離子%氧氟玻璃
광학재료%상전환발광%복사약천%희토리자%양불파리
稀土离子掺杂的氧氟玻璃是一种新型上转换发光材料.制备了Tm3+/Yb3+单掺、共掺的摩尔分数为n(SiO2)=0.30,n(PbF2)=0.50,n=(Al2O3)=0.15,n(AlF3)=(0.049-x),n(TmF3)=y,n(YbF3)=x(x=0,0.001,0.010,0.015,0.020,y=0,0.001)系统氧氟玻璃,研究了其上转换发光特性、分析了其上转换发光机理.研究发现,在970 nm抽运光源激发下,Tm3+单掺时没有可见光上转换发射;而加入Yb3+后产生了强的蓝光(452 nm,476 nm)、红光(647 nm)及近红外光(791 nm)发射,分别对应如下辐射跃迁:1D2→3F4、1G4→3H6、1G4→3F4和3H4→3H6;且随着Yb3+离子浓度的增加上转换发光增强.在970 nm光源抽运下用Yb3+敏化Tm3+可以显著提高其上转换发光强度,且随着Yb3+离子浓度的增加,增强了对抽运光源的吸收并提高了Yb3+到Tm3+的能量转移几率,从而增强了上转换发光强度.
稀土離子摻雜的氧氟玻璃是一種新型上轉換髮光材料.製備瞭Tm3+/Yb3+單摻、共摻的摩爾分數為n(SiO2)=0.30,n(PbF2)=0.50,n=(Al2O3)=0.15,n(AlF3)=(0.049-x),n(TmF3)=y,n(YbF3)=x(x=0,0.001,0.010,0.015,0.020,y=0,0.001)繫統氧氟玻璃,研究瞭其上轉換髮光特性、分析瞭其上轉換髮光機理.研究髮現,在970 nm抽運光源激髮下,Tm3+單摻時沒有可見光上轉換髮射;而加入Yb3+後產生瞭彊的藍光(452 nm,476 nm)、紅光(647 nm)及近紅外光(791 nm)髮射,分彆對應如下輻射躍遷:1D2→3F4、1G4→3H6、1G4→3F4和3H4→3H6;且隨著Yb3+離子濃度的增加上轉換髮光增彊.在970 nm光源抽運下用Yb3+敏化Tm3+可以顯著提高其上轉換髮光彊度,且隨著Yb3+離子濃度的增加,增彊瞭對抽運光源的吸收併提高瞭Yb3+到Tm3+的能量轉移幾率,從而增彊瞭上轉換髮光彊度.
희토리자참잡적양불파리시일충신형상전환발광재료.제비료Tm3+/Yb3+단참、공참적마이분수위n(SiO2)=0.30,n(PbF2)=0.50,n=(Al2O3)=0.15,n(AlF3)=(0.049-x),n(TmF3)=y,n(YbF3)=x(x=0,0.001,0.010,0.015,0.020,y=0,0.001)계통양불파리,연구료기상전환발광특성、분석료기상전환발광궤리.연구발현,재970 nm추운광원격발하,Tm3+단참시몰유가견광상전환발사;이가입Yb3+후산생료강적람광(452 nm,476 nm)、홍광(647 nm)급근홍외광(791 nm)발사,분별대응여하복사약천:1D2→3F4、1G4→3H6、1G4→3F4화3H4→3H6;차수착Yb3+리자농도적증가상전환발광증강.재970 nm광원추운하용Yb3+민화Tm3+가이현저제고기상전환발광강도,차수착Yb3+리자농도적증가,증강료대추운광원적흡수병제고료Yb3+도Tm3+적능량전이궤솔,종이증강료상전환발광강도.
