Advanced Materials

Efficient Near-Infrared Emission from Sodalite Derivatives

Authors

  • M. Lezhnina,

    1. University of Applied Sciences Münster, Chemical Engineering/Applied Materials Sciences, Stegerwaldstr. 39, D-48565 Steinfurt, Germany
    2. On leave from the Mari Technical State University Yoshkar-Ola, Institute of Physics, Lenin-pl. 3, 424000 Yoshkar-Ola, Russia
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  • F. Laeri,

    1. Technische Universität Darmstadt, Institut für Angewandte Physik/Arbeitsgruppe Laserphysik, Hochschulstraße 6, D-64289 Darmstadt, Germany
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  • L. Benmouhadi,

    1. Technische Universität Darmstadt, Institut für Angewandte Physik/Arbeitsgruppe Laserphysik, Hochschulstraße 6, D-64289 Darmstadt, Germany
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  • U. Kynast

    1. University of Applied Sciences Münster, Chemical Engineering/Applied Materials Sciences, Stegerwaldstr. 39, D-48565 Steinfurt, Germany
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  • The authors are greatly indebted to Dr. D. Hreniak and Prof. W. Strek of the Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Wroclaw, for their assistance in lifetime spectroscopy.

Abstract

The use of nanoporous host materials for luminescent guests has been extended into the near-infrared (NIR) regime using sodalite derivatives containing rare earth ions and the tungstate group (see Figure). The emission intensities obtained for Nd3+ meet or even surpass commercial Nd glasses. While Nd3+-tungstate-modified zeolites do not yield significant luminescence, NIR emission occurs in the sodalites due to the low phonon frequencies involved and the exclusion of water in particular.

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