Studies on Upconversion Mechanism of ZrO_2∶Er^(3+),Yb^(3+) Nanocrystals Under Excitation at 488 and 980 nm  

作　　者：JIARuo-kun JIANWen-ping GUOWei SHANGui-ye LUeQian LIUZhao-yue BAIYu-bai LITie-jin KONGXiang-gu 

机构地区：[1]CollegeofChemistry,JilinUniversity,Changchun130023,P.R.China [2]InstituteofOptics,FineMechanicsandPhysics,ChineseAcademyofSciences,Changchun130021,P.R.China

出　　处：《Chemical Research in Chinese Universities》2004年第6期781-784,共4页高等学校化学研究（英文版）

基　　金：the National Natural Science Foundation of China(No.2 0 0 730 16 and 6 0 2 710 2 0 ) ,state 86 3Projects(No.2 0 0 2 AA 30 2 2 0 3) and state 973Projects(No.G19990 6 4 5 0 4 )

摘　　要：Erbium, Ytterbium-codoped ZrO 2 nanoparticles(ZrO 2∶Er 3+ ,Yb 3+ ) were prepared by the sol-emulsion-gel technique. The purpose of the present study is the application of upconversion phosphor in the biological label. In order to make out the mechanism of upconversion under 980 nm excitation the 488 nm pump was used. The influence of temperature on the crystallite phase was studied. The results confirm the upconverted mechanism in ZrO 2∶Er 3+ ,Yb 3+ nanocrystals is due to an energy transfer upconversion(ETU).Erbium, Ytterbium-codoped ZrO 2 nanoparticles(ZrO 2∶Er 3+ ,Yb 3+ ) were prepared by the sol-emulsion-gel technique. The purpose of the present study is the application of upconversion phosphor in the biological label. In order to make out the mechanism of upconversion under 980 nm excitation the 488 nm pump was used. The influence of temperature on the crystallite phase was studied. The results confirm the upconverted mechanism in ZrO 2∶Er 3+ ,Yb 3+ nanocrystals is due to an energy transfer upconversion(ETU).

关 键 词：UPCONVERSION ZrO  2∶Er    3+   Yb    3+ Biological label 

分 类 号：O614.412[理学—无机化学] O614.33[理学—化学]