Closing the green gap of photosystem I with synthetic fluorophores for enhanced photocurrent generation in photobiocathodes.

ABSTRACT: One restriction for biohybrid photovoltaics is the limited conversion of green light by most natural photoactive components. The present study aims to fill the green gap of photosystem I (PSI) with covalently linked fluorophores, ATTO 590 and ATTO 532. Photobiocathodes are prepared by combining a 20 μm thick 3D indium tin oxide (ITO) structure with these constructs to enhance the photocurrent density compared to setups based on native PSI. To this end, two electron transfer mechanisms, with and without a mediator, are studied to evaluate differences in the behavior of the constructs. Wavelength-dependent measurements confirm the influence of the additional fluorophores on the photocurrent. The performance is significantly increased for all modifications compared to native PSI when cytochro

SUBMITTER: Morlock S 

PROVIDER: S-EPMC9930989 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature