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Long-living and highly efficient bio-hybrid light-emitting diodes with zero-thermal-quenching biophosphors

Author

Listed:
  • Anna Espasa

    (IMDEA Materials Institute, Calle Eric Kandel 2)

  • Martina Lang

    (Friedrich-Alexander-University of Erlangen-Nuremberg)

  • Carmen F. Aguiño

    (IMDEA Materials Institute, Calle Eric Kandel 2)

  • Daniel Sanchez-deAlcazar

    (Center for Cooperative Research in Biomaterials (CIC biomaGUNE), Basque Research and Technology Alliance (BRTA))

  • Juan P. Fernández-Blázquez

    (IMDEA Materials Institute, Calle Eric Kandel 2)

  • Uwe Sonnewald

    (Friedrich-Alexander-University of Erlangen-Nuremberg)

  • Aitziber L. Cortajarena

    (Center for Cooperative Research in Biomaterials (CIC biomaGUNE), Basque Research and Technology Alliance (BRTA)
    Ikerbasque, Basque Foundation for Science)

  • Pedro B. Coto

    (University of Oviedo)

  • Rubén D. Costa

    (IMDEA Materials Institute, Calle Eric Kandel 2)

Abstract

Bio-hybrid light-emitting diodes (Bio-HLEDs) based on color down-converting filters with fluorescent proteins (FPs) have achieved moderate efficiencies (50 lm/W) and stabilities (300 h) due to both thermal- and photo-degradation. Here, we present a significant enhancement in efficiency (~130 lm/W) and stability (>150 days) using a zero-thermal-quenching bio-phosphor design. This is achieved shielding the FP surface with a hydrophilic polymer allowing their homogenous integration into the network of a light-guiding and hydrophobic host polymer. We rationalize how the control of the mechanical and optical features of this bio-phosphor is paramount towards highly stable and efficient Bio-HLEDs, regardless of the operation conditions. This is validated by the relationships between the stiffness of the FP-polymer phosphor and the maximum temperature reached under device operation as well as the transmittance of the filters and device efficiency.

Suggested Citation

  • Anna Espasa & Martina Lang & Carmen F. Aguiño & Daniel Sanchez-deAlcazar & Juan P. Fernández-Blázquez & Uwe Sonnewald & Aitziber L. Cortajarena & Pedro B. Coto & Rubén D. Costa, 2020. "Long-living and highly efficient bio-hybrid light-emitting diodes with zero-thermal-quenching biophosphors," Nature Communications, Nature, vol. 11(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-14559-8
    DOI: 10.1038/s41467-020-14559-8
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