Photo-ferroelectric perovskite interfaces for boosting V_OC in efficient perovskite solar cells.

ABSTRACT: Interface engineering is the core of device optimization, and this is particularly true for perovskite photovoltaics (PVs). The steady improvement in their performance has been largely driven by careful manipulation of interface chemistry to reduce unwanted recombination. Despite that, PVs devices still suffer from unavoidable open circuit voltage (V_OC) losses. Here, we propose a different approach by creating a photo-ferroelectric perovskite interface. By engineering an ultrathin ferroelectric two-dimensional perovskite (2D) which sandwiches a perovskite bulk, we exploit the electric field generated by external polarization in the 2D layer to enhance charge separation and minimize interfacial recombination. As a result, we observe a net gain in the device V_OC reachin

SUBMITTER: Pica G 

PROVIDER: S-EPMC11464595 | biostudies-literature | 2024 Oct

REPOSITORIES: biostudies-literature