Boosting the photovoltaic performance of doctor-bladed organic solar cells using a low-boiling solvent additive

Additive-assisted strategy for high-efficiency organic solar cells

“…1b) into doctor-bladed OSCs based on PM6:Y6:PC 61 BM. 86 The results indicated that 1,4-DFB could suppress the bimolecular recombination and trap-assisted recombination in the blend film, contributing to the enhancement of J SC and FF (Table 2). Additionally, the photoluminescence (PL) and time-resolved photoluminescence (TRPL) spectra showed that the film processed with 1,4-DFB exhibited more efficient exciton dissociation and charge carrier transport.…”

“…Several volatile solvent additives were reported in nonfullerene-based systems recently. 85,86 Tao et al utilized tetrahydrofuran (THF, 66 °C, Fig. 1b) as the additive in D18-Cl:Y6 (Fig.…”