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

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.

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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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