Judd–Ofelt Analysis of Eu³⁺ Emission in TiO₂ Anatase Nanoparticles

• Brik Mikhail G.

  College of Sciences, Chongqing University of Posts and Telecommunications Institute of Physics, University of Tartu Institute of Physics, Jan Dlugosz University Institute of Physics, Polish Academy of Sciences

• Antic Željka M.

  University of Belgrade, Vinca Institute of Nuclear Sciences

• Vukovic Katarina

  University of Belgrade, Vinca Institute of Nuclear Sciences

• Dramicanin Miroslav D.

  University of Belgrade, Vinca Institute of Nuclear Sciences

書誌事項

タイトル別名

• Judd–Ofelt Analysis of Eu³⁺ Emission in TiO₂ Anatase Nanoparticles

抄録

Preparation and spectroscopic studies of the TiO₂ nanopowders doped with Eu³⁺ ions are described. Efficient emission in the red part of the visible spectrum can be obtained due to the ⁵D₀ → ⁷F₂ emission of europium ions. Quantum efficiency of such emission was estimated to be about 0.83, which indicates a rather weak role of the non-radiative losses. However, the increase of Eu³⁺ concentration up to 10 at% significantly lowers the quantum efficiency because of the energy transfer and re-absorption processes. Higher doping concentrations (larger than 3 at% of Eu³⁺) also decrease the covalency of the Eu³⁺–O²⁻ chemical bonds.

収録刊行物

• MATERIALS TRANSACTIONS

  MATERIALS TRANSACTIONS 56 (9), 1416-1418, 2015

  公益社団法人 日本金属学会

キーワード

• Judd-Ofelt analysis
• TiO₂
• nanoparticles
• phosphorescence
• europium

詳細情報

• CRID: 1390001204253149312
• NII論文ID: 130005094798
• DOI: 10.2320/matertrans.ma201566
• ISSN: 13475320
• ISSN: 13459678
• Web Site: https://www.jstage.jst.go.jp/article/matertrans/56/9/56_MA201566/_pdf
• 本文言語コード: en
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