Photoluminescence of Eu3+and Tb3+ ions adsorbed on oxide nanosheets

Asami Funatsu, Shintaro Ida, Chikako Ogata, Yasumichi Matsumoto

研究成果: Contribution to journalArticle査読

2 被引用数 (Scopus)

抄録

Photoluminescence properties of TiO (Ti1.825O4) and NbO (Nb6O17) nanosheets adsorbed with Ln3+ ions were studied comparing with those of photoluminescent GdEuTiO and LaTbTaO perovskite nanosheets. Intense emissions of Ln3+ (Eu3+ and Tb3+) ions adsorbed on TiO and NbO (Ln3+/MO) nanosheets were observed during UV light illumination. The photoluminescence results from the energy transfer from the band gap excitation of the nanosheets to the adsorbed Ln3+. Coadsorbed H2O increased the emission intensities of the adsorbed Ln3+ for the Ln3+/MO samples. On the other hand, no effect of adsorbed H2O on the emission intensities of the photoluminescent perovskite nanosheets was observed because of the presence of Ln3+ on the inside of the nanosheets. Hydrogen-bonding networks between O21 ions of the nanosheet surface and the adsorbed H2O surrounding Ln3+ will promote the energy transfer for the Ln3+/MO samples. Recombination and photoreaction of the produced electron and hole of the nanosheet, and a phonon due to the adsorbed H2O suppress the emission, according to the analyses of effects of pH, adsorbed ions and D2O on the emission.

本文言語英語
ページ(範囲)867-872
ページ数6
ジャーナルBulletin of the Chemical Society of Japan
84
8
DOI
出版ステータス出版済み - 8 22 2011

All Science Journal Classification (ASJC) codes

  • Chemistry(all)

フィンガープリント 「Photoluminescence of Eu<sup>3+</sup>and Tb<sup>3+</sup> ions adsorbed on oxide nanosheets」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

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