Ethanol-Assisted Green-Solvent-Based Strategy for Slot-Die Coated Perovskite Solar Cells with over 70% Eco-Friendly Solvent Content.

ABSTRACT: Perovskite solar cells (PSCs) have recently achieved remarkable power conversion efficiencies, yet their commercial viability critically depends on the development of scalable, eco-friendly fabrication processes. In particular, eliminating the use of toxic solvents such as N,N-dimethylformamide (DMF) and 2-methoxyethanol in slot-die coating remains a major challenge. Here, a green solvent engineering strategy is presented that reduces hazardous solvent content by incorporating ethanol, a benign, low toxicity solvent, into the perovskite precursor solution. In the formulation, the fraction of hazardous solvents is reduced from 50% to 30% by volume. The introduction of ethanol improves substrate wetting and optimizes vapor pressure, both of which are key for achieving uniform film formation

SUBMITTER: Ahn JW 

PROVIDER: S-EPMC12747649 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature