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Transparent luminescent layers via ionic liquid-based approach to LaPO4:RE (RE = Ce, Tb, Eu) dispersions

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Abstract

Transparent layers containing the highly luminescent nanophosphors LaPO4:Ce,Tb and LaPO4:Eu are realized by ink-jet printing on standard transparencies and black paper. The luminescent material is non-agglomerated, 15 nm in size, and applied as a dispersion in ethanol for printing. The structured layers exhibit intense green (LaPO4:Ce,Tb) or red (LaPO4:Eu) emission. While printing on overhead transparencies, an optical transmission of about 90% is realized. This value, in fact, is limited due to the performance of the underlying polymer material. A microwave-assisted synthesis in ionic liquids as a novel concept of synthesis is prerequisite to gain the nanoscale phosphor materials.

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Authors and Affiliations

  1. Institut für Anorganische Chemie der Universität Karlsruhe (TH), Engesserstraße 15, 76131, Karlsruhe, Germany

    G. Bühler & C. Feldmann

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  1. G. Bühler
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  2. C. Feldmann
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Correspondence to C. Feldmann.

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PACS

61.46.+w; 78.67.Bf; 81.07.-b

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Bühler, G., Feldmann, C. Transparent luminescent layers via ionic liquid-based approach to LaPO4:RE (RE = Ce, Tb, Eu) dispersions. Appl. Phys. A 87, 631–636 (2007). https://doi.org/10.1007/s00339-007-3865-4

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  • DOI: https://doi.org/10.1007/s00339-007-3865-4

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