Luminescent thin films and nanoparticles of europium doped hybrids based on organosilyl β-diketonate

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• 作者：Xianmin Guo (2) (3)
  Jean-Louis Canet (1) (3)
  Damien Boyer (1) (3)
  Pierre Adumeau (2) (3)
  Rachid Mahiou (2) (3)
  
• 关键词：Nanoparticles ; Thin films ; Optical materials ; Photoluminescence spectroscopy
• 刊名：Journal of Sol-Gel Science and Technology
• 出版年：2012
• 出版时间：November 2012
• 年：2012
• 卷：64
• 期：2
• 页码：404-410
• 全文大小：619KB
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• 作者单位：Xianmin Guo (2) (3)
  Jean-Louis Canet (1) (3)
  Damien Boyer (1) (3)
  Pierre Adumeau (2) (3)
  Rachid Mahiou (2) (3)
  
  2. Institut de Chimie de Clermont-Ferrand, Clermont Université, UBP, BP 10448, 63000, Clermont-Ferrand, France
  3. CNRS, UMR 6296, ICCF, 63177, Aubière, France
  1. Institut de Chimie de Clermont-Ferrand, Clermont Université, ENSCCF, BP 10448, 63000, Clermont-Ferrand, France
  
• ISSN：1573-4846

文摘

Novel organic–inorganic hybrid materials shaped as transparent films and core–shell nanoparticles were prepared by the sol–gel process from a new organo-alkoxysilane based on a β-diketonate (DBM-OH) and doped with trivalent europium ions. The resultant hybrid materials were characterized by Raman spectroscopy and electronic microscopy. Films thickness and nanoparticles size were respectively measured around 1?μm and 30?nm. The photoluminescence study, including the recording of excitation and emission spectra as well as the determination of the decay times, was investigated at room temperature. The results have pointed out an efficient ligand-to-Eu3+ intramolecular energy transfer resulting in a high quantum yield as determined by using an integrating sphere.