Efficient and stable inverted perovskite solar cells enabled by homogenized PCBM with enhanced electron transport.

ABSTRACT: Fullerene derivatives are extensively employed in inverted perovskite solar cells due to their excellent electron extraction capabilities. However, [6,6]-phenyl-C₆₁-butyric acid methyl ester (PCBM) agglomerates easily in solution and exhibits a relatively low ionization barrier, increasing charge recombination losses and charge accumulation in the interface. Here, tetramethylthiuram disulfide (TMDS) is introduced into the PCBM solution to induce the formation of reducing sulfur radicals through UV light irradiation, allowing for n doping of the PCBM material. The resulting modified PCBM layer exhibits enhanced conductivity and electron mobility, significantly suppressing charge recombination. As a result, the resulting devices incorporating TMDS achieve a champion efficiency of

SUBMITTER: Gong C 

PROVIDER: S-EPMC11499991 | biostudies-literature | 2024 Oct

REPOSITORIES: biostudies-literature