Performance and stability analysis of all-perovskite tandem photovoltaics in light-driven electrochemical water splitting.

ABSTRACT: All-perovskite tandem photovoltaics are a potentially cost-effective technology to power chemical fuel production, such as green hydrogen. However, their application is limited by deficits in open-circuit voltage and, more challengingly, poor operational stability of the photovoltaic cell. Here we report a laboratory-scale solar-assisted water-splitting system using an electrochemical flow cell and an all-perovskite tandem solar cell. We begin by treating the perovskite surface with a propane-1,3-diammonium iodide solution that reduces interface non-radiative recombination losses and achieves an open-circuit voltage above 90% of the detailed-balance limit for single-junction solar cells between the bandgap of 1.6-1.8 eV. Specifically, a high open-circuit voltage of 1.35 V and maximum power

SUBMITTER: Wang J 

PROVIDER: S-EPMC11695925 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature