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Sr[Li2Al2O2N2]:Eu2+—A high performance red phosphor to brighten the future

Author

Listed:
  • Gregor J. Hoerder

    (University of Innsbruck)

  • Markus Seibald

    (OSRAM Opto Semiconductors GmbH)

  • Dominik Baumann

    (OSRAM Opto Semiconductors GmbH)

  • Thorsten Schröder

    (OSRAM Opto Semiconductors GmbH)

  • Simon Peschke

    (OSRAM Opto Semiconductors GmbH)

  • Philipp C. Schmid

    (OSRAM Opto Semiconductors GmbH)

  • Tobias Tyborski

    (OSRAM Opto Semiconductors GmbH)

  • Philipp Pust

    (OSRAM Opto Semiconductors GmbH)

  • Ion Stoll

    (OSRAM Opto Semiconductors GmbH)

  • Michael Bergler

    (OSRAM Opto Semiconductors GmbH)

  • Christian Patzig

    (Fraunhofer Institute for Microstructure of Materials and Systems IMWS)

  • Stephan Reißaus

    (Fraunhofer Institute for Microstructure of Materials and Systems IMWS)

  • Michael Krause

    (Fraunhofer Institute for Microstructure of Materials and Systems IMWS)

  • Lutz Berthold

    (Fraunhofer Institute for Microstructure of Materials and Systems IMWS)

  • Thomas Höche

    (Fraunhofer Institute for Microstructure of Materials and Systems IMWS)

  • Dirk Johrendt

    (Ludwig Maximilian University of Munich)

  • Hubert Huppertz

    (University of Innsbruck)

Abstract

Innovative materials for phosphor converted white light-emitting diodes are in high demand owing to the huge potential of the light-emitting diode technology to reduce energy consumption worldwide. As the primary blue diode is already highly optimized, the conversion phosphors are of crucial importance for any further improvements. We report on the discovery of the high performance red phosphor Sr[Li2Al2O2N2]:Eu2+ meeting all requirements for a phosphor’s optical properties. It combines the optimal spectral position for a red phosphor, as defined in the 2016 Research & Development-plan of the United States government, with an exceptionally small spectral full width at half maximum and excellent thermal stability. A white mid-power phosphor-converted light-emitting diode prototype utilising Sr[Li2Al2O2N2]:Eu2+ shows an increase of 16% in luminous efficacy compared to currently available commercial high colour-rendering phosphor-converted light-emitting diodes, while retaining excellent high colour rendition. This phosphor enables a big leap in energy efficiency of white emitting phosphor-converted light-emitting-diodes.

Suggested Citation

  • Gregor J. Hoerder & Markus Seibald & Dominik Baumann & Thorsten Schröder & Simon Peschke & Philipp C. Schmid & Tobias Tyborski & Philipp Pust & Ion Stoll & Michael Bergler & Christian Patzig & Stephan, 2019. "Sr[Li2Al2O2N2]:Eu2+—A high performance red phosphor to brighten the future," Nature Communications, Nature, vol. 10(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-09632-w
    DOI: 10.1038/s41467-019-09632-w
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    Cited by:

    1. Yongsheng Sun & Yuzhen Wang & Weibin Chen & Qingquan Jiang & Dongdan Chen & Guoping Dong & Zhiguo Xia, 2024. "Rapid synthesis of phosphor-glass composites in seconds based on particle self-stabilization," Nature Communications, Nature, vol. 15(1), pages 1-8, December.

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