Advanced biohybrid lighting and photovoltaic devices

Información del proyecto

InOutBioLight

Identificador del acuerdo de subvención: 816856

DOI

10.3030/816856

Fecha de la firma de la CE 19 Diciembre 2018

Fecha de inicio 1 Septiembre 2020

Fecha de finalización 31 Mayo 2027

Financiado con arreglo a

• EXCELLENT SCIENCE - European Research Council (ERC)

Coste total

€ 1 999 188,00

Aportación de la UE

€ 1 999 188,00

Coordinado por

TECHNISCHE UNIVERSITAET MUENCHEN
Germany

Periodic Reporting for period 3 - InOutBioLight (Advanced biohybrid lighting and photovoltaic devices)

Período documentado: 2023-09-01 hasta 2025-02-28

Resumen del contexto y de los objetivos generales del proyecto

Proteins are a paradigm materials programmed to optimize their bio-functionality (fluorescence, redox behaviors, catalytic activity, transport phenomena, etc.) in living organisms. While we have mastered an excellent genetic toolbox to tune protein functionality in-vivo for imaging, sensing, etc., their stabilization has been unsuccessful, limiting the progress of the emerging protein-based optoelectronic technologies, such as lighting and photovoltaic devices, with respect to device fabrication using traditional techniques and architectures as well as standard operation conditions. This becomes more urgent when recent proof-of-concept functional protein-based materials/components can replace rare earth and/or toxic components of our current technology without reducing performance. In this context, InOutBiolight aims at understanding the protein-polymer stabilization interaction, enhancing their mechanical, thermal, color-converting, and light-guiding features, and iii) advancing biohybrid lighting and photovoltaic technologies. The latter are placed at the forefront of the EU efforts for low-cost production and efficient consumption of electricity, a critical issue for a sustainable development of our society.

Trabajo realizado desde el comienzo del proyecto hasta el final del período abarcado por el informe y los principales resultados hasta la fecha

Over this period, we aimed at i) understanding fluorescent protein polymer interactions and degradation mechanism under device operation conditions, ii) enhancing hybrid lighting-emitting diodes (HLEDs) with a particular focus on red-emitting devices, and iii) realizing the first-steps towards FP-based solar cells. The actions included the study of i) natural additives to enhance stability, ii) new polymers designs and iii) new host:guest hybrid FP-silica nanoparticles. We encountered that polysaccharides features a strong binding energy and excellent buried volume at the FP surface H-channels leading to enhanced photo-thermal-stabilities. Here, the use of hydroxypropylcellulose and archetypal red-emitting FPs (mCherry and SmuRFP) allowed us to reach HLEDs with outstanding stabilities (2600 h/108 days for SmuRFP and 3 h for mCherry) compared to best devices with perylenediimides (<700 h) and host:guest FPs (<800 h). The low mCherry stability encouraged us to study its degradation under ambient/inert atmospheres, revealing a photo-induced cis-trans isomerization and the oxygen/water effects on the deactivation. Based on these findings, we focused on a new configuration using polyvinyl alcohol derivatives, in which crystallinity and trapped water (stiffness and oxygen/moisture barriers) are controlled by hydroxylation, reaching devices with a final lifetime of 2700 h. Finally, FP-silica nanoparticles (FP surface modification by 3-aminopropyltriethoxysilane followed by one-pot sol-gel chemistry) were achieved. The SiO2 shielding retains the FP-emission in dry air-storage at 25 °C and 50 °C and toluene/dichloromethane over a year. Water-free coatings showed strongly reduced heat generation/transfer and slowed down photo-induced deactivation, leading to 130 days device stabilities.

Avances que van más allá del estado de la técnica e impacto potencial esperado (incluida la repercusión socioeconómica y las implicaciones sociales más amplias del proyecto hasta la fecha)

The lighting device stability has been increased from 50 h to 2700 h, paving the way to develop highly stable white HLEDs in the near future.
The impact of additives will be more easily understood/predicted using a experimental protocol to characterize polymer coatings that could be of high interest for other protein-based technological fields on catalysis, electrical conductors, etc.;
Fluorescent protein stability in organic solvents has been limited to <24 h and we have shown that a sol-gel chemistry is effective (1 year stable), but limits application by the nature of the silica shell (dielectric, scattering events, etc.). This could be solved if other semiconducting metal oxides are applied.
in-situ sol-gel chemistry on metal oxide electrodes could also be effective to provide protein-solar cells with enhanced stabilities in which the prior-art showed stabilities of a few second to minutes.

Fresh and 1 year FP-Silica toluene suspension (left) and their lighting devices (right)