Abstract

PSS) films were investigated as the transparent electrode of both rigid and flexible PSCs. The conductivity of PSS films on rigid glass or flexible poly(ethylene terephthalate) (PET) substrate is significantly enhanced through a treatment with methanesulfonic acid (MSA). The optimal power conversion efficiency (PCE) is close to 11% for the rigid PSCs with an MSA-treated PSS film as the transparent electrode on glass, and it is more than 8% for the flexible PSCs with a MSA-treated PSS film as the transparent electrode on PET. The flexible PSCs exhibit excellent mechanical flexibility in the bending test.

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