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Oriented Monolayer Film of Gd2O3:0.05 Eu Crystallites: Quasi-Topotactic Transformation of the Hydroxide Film and Drastic Enhancement of Photoluminescence Properties

Authors

  • Linfeng Hu,

    1. International Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan), Fax: (+81) 29-851-9061
    2. Graduate School of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571 (Japan)
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  • Renzhi Ma Dr.,

    1. International Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan), Fax: (+81) 29-851-9061
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  • Tadashi C. Ozawa Dr.,

    1. International Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan), Fax: (+81) 29-851-9061
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  • Takayoshi Sasaki Prof.

    1. International Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan), Fax: (+81) 29-851-9061
    2. Graduate School of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571 (Japan)
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  • This work was supported by CREST of the Japan and Technology Agency (JST) and World Premier International Center Initiative (WPI Initiative) on Materials Nanoarchitectonics, MEXT (Japan). Hydroxide film=Gd(OH)2.5Cl0.5⋅0.9 H2O:0.05 Eu.

Abstract

Caught on film: A semitransparent and intensely luminescent monolayer film of oriented Gd2O3:0.05 Eu platelet crystallites is fabricated by annealing the precursor hydroxide film (see scheme). The photoluminescence properties of the as-transformed film are greatly improved over those of the hydroxide film, and are much more pronounced than those of the corresponding Gd2O3:0.05 Eu powder.

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