Hydroquinone redox mediator enhances the photovoltaic performances of chlorophyll-based bio-inspired solar cells.

ABSTRACT: Chlorophyll (Chl) derivatives have recently been proposed as photoactive materials in next-generation bio-inspired solar cells, because of their natural abundance, environmental friendliness, excellent photoelectric performance, and biodegradability. However, the intrinsic excitation dynamics of Chl derivatives remain unclear. Here, we show sub-nanosecond pump-probe time-resolved absorption spectroscopy of Chl derivatives both in solution and solid film states. We observe the formation of triplet-excited states of Chl derivatives both in deoxygenated solutions and in film samples by adding all-trans-β-carotene as a triplet scavenger. In addition, radical species of the Chl derivatives in solution were identified by adding hydroquinone as a cation radical scavenger and/or anion radical dono

SUBMITTER: Duan S 

PROVIDER: S-EPMC9814249 | biostudies-literature | 2021 Aug

REPOSITORIES: biostudies-literature