Preparation of Rare-Earth Doped Zirconia Nanoparticles via Supercritical Hydrothermal Method for Luminescence Properties

摘要：

　　We report preparation of Tb3+ or Eu3+ doped zirconia nanoparticles by sub-and supercritical hydrothermal reaction and luminescence properties.Experiments were performed by a flow-type hydrothermal reaction system.We investigated the effect of the reaction temperature on crystal structure,particle size and photo-,electro-luminescence properties.Reaction temperature was varied in the ranges of 150 ℃ to 400 ℃ and reaction pressure was fixed to 30MPa.Characteristics of the products were performed by XRD,TEM,SEM-EDS and PL,EL measurements.The product transformed from amorphous zirconium hydroxide to tetragonal ZrO2 with an increase in the reaction temperature,regardless of the doped ion species.The ZrO2∶Eu particles obtained at 400℃ were spherical with around 5 nm in diameter.ZrO2∶Eu nanoparticles obtained under supercritical water condision showed typical photoluminescence spectra of f-f transition of Eu3+; however ZrO2∶Tb nanoparticle obtained under the same condition showed no photoluminescence.Furthermore,the ZrO2∶Eu nanoparticles obtained at 400 ℃ showed high electroluminescence properties at electric field of 350V and 1kHz.

关键词： Rare earth doped zirconia Hydrothermal synthesis Supercritical water Photoluminescence Electroluminescence

作者: Yukiya Hakuta Kiwamu Sue Yoshihiro Takebayashi Satoshi Yoda Takeshi Furuya Hiroshi Takashima

作者单位: National Institute of Advanced Industrial Science and Technology(AIST),Central 5,1-1-1,Tsukuba,Ibaraki,305-8565 JAPAN

会议类型: 国际会议

会议名称: The Seventh China International Conference on High-Performance Ceramics (第七届先进陶瓷国际研讨会(CICC-7))

会议地点: 厦门

会议语种:英文

页码: 59-64

在线出版日期: 2011-11-04（万方平台首次上网日期，不代表论文的发表时间）