TY - JOUR
T1 - Long-living and highly efficient bio-hybrid light-emitting diodes with zero-thermal-quenching biophosphors
AU - Espasa, Anna
AU - Lang, Martina
AU - Aguiño, Carmen F.
AU - Sanchez-deAlcazar, Daniel
AU - Fernández-Blázquez, Juan P.
AU - Sonnewald, Uwe
AU - Cortajarena, Aitziber L.
AU - Coto, Pedro B.
AU - Costa, Rubén D.
PY - 2020/12/1
Y1 - 2020/12/1
N2 - 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.
AB - 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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U2 - 10.1038/s41467-020-14559-8
DO - 10.1038/s41467-020-14559-8
M3 - Article
C2 - 32054851
AN - SCOPUS:85079335196
SN - 2041-1723
VL - 11
JO - Nature communications
JF - Nature communications
IS - 1
M1 - 879
ER -