Preparation and photoluminescence of Eu2+ and Eu3+-doped NaLuO2

Hisanori Yamane; Akihiro Nakanishi; Shiro Funahashi; Takayuki Nakanishi; Kohsei Takahashi; Naoto Hirosaki; Takashi Takeda

doi:10.2109/jcersj2.25048

Regular Issue: Full papers

Preparation and photoluminescence of Eu²⁺ and Eu³⁺-doped NaLuO₂

Hisanori Yamane, Akihiro Nakanishi, Shiro Funahashi, Takayuki Nakanishi, Kohsei Takahashi, Naoto Hirosaki, Takashi Takeda

著者情報

キーワード: Solid state reaction, Ternary oxide, Powder X-ray diffraction, Rietveld analysis, Photoluminescence, Eu²⁺ and Eu³⁺ emission center

ジャーナルオープンアクセス

2025 年 133 巻 7 号 p. 389-392

DOI https://doi.org/10.2109/jcersj2.25048

詳細

抄録

Single phase NaLuO₂, which crystallizes in the α-NaFeO₂-type structure (trigonal, space group R3m), was synthesized by heating a mixture of Na₂O and Lu₂O₃ at 1150 °C. The crystal structure of this oxide was analyzed using the Rietveld method for the powder X-ray diffraction pattern, and the oxygen atom coordinate [z = 0.2397(3)] was refined. Mixtures of NaLuO₂ and europium monoxide with a composition NaLuO₂–xEuO (x = 0.0, 0.01, 0.1, 1.0 mol %) were heated at 900 °C for 12 h in a N₂ atmosphere. The obtained samples were Eu²⁺ and Eu³⁺-doped NaLuO₂ with trace amounts of Lu₂O₃. The emission spectrum peak due to the 5d → 4f transition of Eu²⁺ occurred at a wavelength of 617 nm under the excitation of a 442 nm blue light, and the full width at half maximum of the spectrum was 80 nm. Intense emission peaks due to the f-f transition of Eu³⁺ were observed at approximately 590 nm when excited by a 230 nm ultraviolet light.

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