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

Espasa A, Lang M, Aguiño CF, Sanchez-deAlcazar D, Fernández-Blázquez JP, Sonnewald U, Cortajarena AL, Coto PB, Costa RD (2020)

Publication Type: Journal article

Publication year: 2020

Journal

Nature Communications Nature Publishing Group: Nature Communications

Book Volume: 11

Pages Range: 879-

Journal Issue: 1

DOI: 10.1038/s41467-020-14559-8

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.

Authors with CRIS profile

Martina Lang Lehrstuhl für Biochemie Uwe Sonnewald Lehrstuhl für Biochemie

Involved external institutions

Institute IMDEA Materials ES Spain (ES) CIC biomaGUNE (Centro de Investigación Cooperativa en Biomateriales) ES Spain (ES) Universidad de Oviedo ES Spain (ES)

How to cite

APA:

Espasa, A., Lang, M., Aguiño, C.F., Sanchez-deAlcazar, D., Fernández-Blázquez, J.P., Sonnewald, U.,... Costa, R.D. (2020). Long-living and highly efficient bio-hybrid light-emitting diodes with zero-thermal-quenching biophosphors. Nature Communications, 11(1), 879-. https://doi.org/10.1038/s41467-020-14559-8

MLA:

Espasa, Anna, et al. "Long-living and highly efficient bio-hybrid light-emitting diodes with zero-thermal-quenching biophosphors." Nature Communications 11.1 (2020): 879-.

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