Rational hydrothermal route to monodisperse Hf1-xEu xO2-x/2 solid solution nanocrystals

Takaaki Taniguchi, Naonori Sakamoto, Tomoaki Watanabe, Nobuhiro Matsushita, Masahiro Yoshimura

研究成果: Article同行評審

19 引文 斯高帕斯(Scopus)

摘要

Highly dispersed and nearly uniformly sized Hf1-xEu xO2-x/2 (x = 0.05, 0.1, and 0.15) solid solution nanoparticles with particle sizes between 2.2 and 5.2 nm were produced via the hydrothermal treatment of a metal-oleate complex precursor at 200 °C for 6 h. The obtained nanocrystals were characterized by IR, EDX, XRD, Raman scattering, TEM, and PL spectroscopy. It was demonstrated that the proposed synthetic technique led to the formation of a Hf1-xEu xO2-x/2 solid solution with a thermodynamically metastable phase (tetragonal HfO2 phase). Pure HfO2 nanocrystals were rod-like in shape with a monoclinic phase, while the doping of HfO 2 by Eu3+ resulted in the nearly spherically shaped nanocrystals. The PL spectroscopy showed significant quenching of Eu 3+ 5Do7Fn radiative transitions for the as-prepared samples, whereas the annealed sample at 400 °C for 5 h showed clear red luminescence.

原文English
頁(從 - 到)4884-4891
頁數8
期刊Journal of Physical Chemistry C
112
發行號13
DOIs
出版狀態Published - 2008 四月 3

All Science Journal Classification (ASJC) codes

  • 電子、光磁材料
  • 能源(全部)
  • 物理與理論化學
  • 表面、塗料和薄膜

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