CRCU

Chemical Research in Chinese Universities ›› 2004, Vol. 20 ›› Issue (6): 781-784.

• Articles • Previous Articles     Next Articles

Studies on Upconversion Mechanism of ZrO2:Er3+,Yb3+ Nanocrystals Under Excitation at 488 and 980 nm

JIA Ruo-kun1, JIAN Wen-ping1, GUO Wei1, SHAN Gui-ye1, LÜ Qian1, LIU Zhao-yue1, BAI Yu-bai1, LI Tie-jin1, KONG Xiang-gu2   

  1. 1. College of Chemistry, Jilin University, Changchun 130023, P. R. China;
    2. Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130021, P. R. China
  • Received:2002-12-12 Online:2004-12-24 Published:2011-08-06
  • Supported by:

    Supported by the National Natural Science Foundation of China(No.20073016 and 60271020), state 863 Projects(No.2002AA302203) and state 973 Projects(No.G1999064504).

PDF (PC)

Abstract: Erbium, Ytterbium-codoped ZrO2 nanoparticles(ZrO2:Er3+,Yb3+) 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 ZrO2:Er3+,Yb3+ nanocrystals is due to an energy transfer upconversion(ETU).

Key words: Upconversion, ZrO2：Er3+, Yb3+, Biological label