Optimizing interface properties of perylene-diimide-based cathode interlayer material by reducing 2-hydroxyethyl groups to achieve organic solar cells with efficiency over 19%
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Diimide
Interface (matter)
A novel solution-processable twisted dimeric perylene diimide (IDT-2PDI) with a bulky fused-ring indacenodithiophene as a bridge is developed as an electron acceptor for organic solar cells (OSCs). Poly(3-hexylthiophene) (P3HT):IDT-2PDI based OSCs have power conversion efficiencies (PCEs) up to 2.61% with a high fill factor of 0.668, and benzodithiophene-diketopyrrolopyrrole (BDT-2DPP):IDT-2PDI based OSCs exhibit a promising PCE of 3.12%.
Diimide
Acceptor
Electron acceptor
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