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Advanced Materials

Simple, Fast, Bright, and Stable Light Sources

Authors

  • Daniel Tordera,

    1. Instituto de Ciencia Molecular, Universidad de Valencia, C/J. Beltran 2, 46980 Paterna, Spain
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  • Sebastian Meier,

    1. Siemens AG, Corporate Technology, CT T DE HW3, GTF Organic Electronics, Günther-Scharowsky-Str. 1, 91058 Erlangen, Germany
    2. Department of Materials Science VI: Materials for Electronics and Energy Technology, Friedrich-Alexander University of Erlangen-Nuremberg, Martensstr. 7, 91058 Erlangen, Germany
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  • Martijn Lenes,

    1. Instituto de Ciencia Molecular, Universidad de Valencia, C/J. Beltran 2, 46980 Paterna, Spain
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  • Rubén D. Costa,

    1. Instituto de Ciencia Molecular, Universidad de Valencia, C/J. Beltran 2, 46980 Paterna, Spain
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  • Enrique Ortí,

    1. Instituto de Ciencia Molecular, Universidad de Valencia, C/J. Beltran 2, 46980 Paterna, Spain
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  • Wiebke Sarfert,

    1. Siemens AG, Corporate Technology, CT T DE HW3, GTF Organic Electronics, Günther-Scharowsky-Str. 1, 91058 Erlangen, Germany
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  • Henk J. Bolink

    Corresponding author
    1. Instituto de Ciencia Molecular, Universidad de Valencia, C/J. Beltran 2, 46980 Paterna, Spain
    • Instituto de Ciencia Molecular, Universidad de Valencia, C/J. Beltran 2, 46980 Paterna, Spain.
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Abstract

In this work we show that solution-processed light-emitting electrochemical cells (LECs) based on only an ionic iridium complex and a small amount of ionic liquid exhibit exceptionally good performances when applying a pulsed current: sub-second turn-on times and almost constant high luminances (>600 cd m−2) and power efficiencies over the first 600 h. This demonstrates the potential of LECs for applications in solid-state signage and lighting.

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