内蒙古师范大学学报（自然科学汉文版）
內矇古師範大學學報（自然科學漢文版）
내몽고사범대학학보（자연과학한문판）
JOURNAL OF INNER MONGOLIA NORMAL UNIVERSITY(NATURAL SCIENCE EDITION)
2015年
4期
481-487
,共7页
刘渝城%德格吉呼%马乌吉斯古楞%阿斯娜
劉渝城%德格吉呼%馬烏吉斯古楞%阿斯娜
류투성%덕격길호%마오길사고릉%아사나
CaYF2:RE%热分解法%上转换发光%纳米材料%光学性质%Yb3+%Er3+
CaYF2:RE%熱分解法%上轉換髮光%納米材料%光學性質%Yb3+%Er3+
CaYF2:RE%열분해법%상전환발광%납미재료%광학성질%Yb3+%Er3+
CaYF2：RE%thermal decomposition method%up-conversion luminescence%nanoparticles%luminescence properties%Er3 +%Yb3 +
采用热分解法合成了一系列 Ca/RE(mol)比例及掺杂浓度不同的 CaYF2：RE(RE=Yb3+,Er3+)上转换纳米发光材料,在980 nm 红外激光照射下,肉眼可观察到明亮的黄、绿色上转换发光.通过 X 射线衍射(XRD)、透射电镜(TEM)、荧光光谱仪对样品进行表征.结果表明,Ca/RE(mol)比例为3,Yb3+和 Er3+掺杂浓度分别为20%、2%(mol)时得到发光性能较好的立方相 CaYF2：Yb,Er 上转换纳米材料.980 nm 红外光激发下, Yb3+和 Er3+共掺的 CaYF2：Yb,Er 发出分别来自于 Er3+的2 H 9/2→4 I15/2跃迁的蓝光、2 H 11/2,4 S3/2→4 I15/2跃迁的绿光和4 F9/2→4 I15/2跃迁的红光发射,且 Er3+的红、绿光发射均为双光子过程,蓝色发光为三光子过程.
採用熱分解法閤成瞭一繫列 Ca/RE(mol)比例及摻雜濃度不同的 CaYF2：RE(RE=Yb3+,Er3+)上轉換納米髮光材料,在980 nm 紅外激光照射下,肉眼可觀察到明亮的黃、綠色上轉換髮光.通過 X 射線衍射(XRD)、透射電鏡(TEM)、熒光光譜儀對樣品進行錶徵.結果錶明,Ca/RE(mol)比例為3,Yb3+和 Er3+摻雜濃度分彆為20%、2%(mol)時得到髮光性能較好的立方相 CaYF2：Yb,Er 上轉換納米材料.980 nm 紅外光激髮下, Yb3+和 Er3+共摻的 CaYF2：Yb,Er 髮齣分彆來自于 Er3+的2 H 9/2→4 I15/2躍遷的藍光、2 H 11/2,4 S3/2→4 I15/2躍遷的綠光和4 F9/2→4 I15/2躍遷的紅光髮射,且 Er3+的紅、綠光髮射均為雙光子過程,藍色髮光為三光子過程.
채용열분해법합성료일계렬 Ca/RE(mol)비례급참잡농도불동적 CaYF2：RE(RE=Yb3+,Er3+)상전환납미발광재료,재980 nm 홍외격광조사하,육안가관찰도명량적황、록색상전환발광.통과 X 사선연사(XRD)、투사전경(TEM)、형광광보의대양품진행표정.결과표명,Ca/RE(mol)비례위3,Yb3+화 Er3+참잡농도분별위20%、2%(mol)시득도발광성능교호적립방상 CaYF2：Yb,Er 상전환납미재료.980 nm 홍외광격발하, Yb3+화 Er3+공참적 CaYF2：Yb,Er 발출분별래자우 Er3+적2 H 9/2→4 I15/2약천적람광、2 H 11/2,4 S3/2→4 I15/2약천적록광화4 F9/2→4 I15/2약천적홍광발사,차 Er3+적홍、록광발사균위쌍광자과정,람색발광위삼광자과정.
A series of CaYF2 :RE(RE=Er3 + ,Yb3 + )up-conversion luminescence nanoparticles (NPs) with various doping concentrations and the ratio of Ca/RE(mol)were synthesized via a thermal decomposi-tion method.The intense up-conversion emission was observed from the NPs under the excitation of a 980 nm laser diode.The NPs were characterized through use the powder X-ray diffraction (XRD),trans-mission electron microscopy (TEM)and fluorescence spectroscopy.The results show that cubic CaYF2 :RE(RE=Er3 + ,Yb3 + )up-conversion materials with excellent luminescence can be obtained when the ratio of Ca/RE(mol)was 3,meantime,the concentrations of Yb3 + and Er3 + were 20% mol,2% mol respective-ly.Under 980 nm laser excitation the Yb3 + and Er3 + co-doped CaYF2 NPs display blue emission from 2 H 9/2 →4 I1 5/2 transitions of Er3 + ions,the green emission assigned to 2 H 1 1/2 →4 I1 5/2 and 4 S3/2 →4 I1 5/2 transi-tions of Er3 + ions,and the red emissions attributed to 4 F9/2 →4 I1 5/2 transitions of Er3 + ions respectively. The red/green emission of Er3 + ions are two-photon process,and the blue emission of Er3 + ions is three-photon process.
