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Defects Passivation With Dithienobenzodithiophene-based π-conjug...
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2021-02-08
04:09:35
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A dithienobenzodithiophene-based π-conjugated polymer consisting of fluorinated benzotriazole and benzothiadiazole is successfully applied through anti-solvent method to passivate the defects of perovskite crystals. The fluorinated polymer interacted with under coordinated Pb2þ ions in the perovskite crystals to form Pb-F bond which effectively passivates the defects. The trap density was reduced and the charge carrier transfer between the perovskite film and Spiro-OMeTAD is also improved after
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