Uniform phase distribution of wide bandgap perovskite for high-performance perovskite-silicon tandem solar cells.

ABSTRACT: Metal halide perovskite-silicon tandem solar cells offer a promising pathway towards surpassing the efficiency limits of single-junction devices, and the focus remains on the wide bandgap (WBG) perovskite top cell optimization. Here, by incorporating melamine additive into a rubidium-alloyed perovskite composition, we suppress film phase separation and inhomogeneity and enhance charge carrier mobility. Consequently, our modified 1.68 eV WBG perovskite solar cells exhibit superior charge transport and minimized non-radiative recombination losses, achieving state-of-the-art performance with open circuit voltage (V_OC) of 1.31 V, fill factor of 86.4% and efficiency of 25%. This also derives an efficient two-terminal perovskite-silicon tandem cell with stabilized efficiency of 33.5%

SUBMITTER: Han Z 

PROVIDER: S-EPMC12749714 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature