Design of (X-DADAD)<sub>n</sub> Type Copolymers for Efficient Bulk Heterojunction Organic Solar Cells
- Akkuratov, Alexander V.
- Susarova, Diana K.
- Kozlov, Oleg V.
- Chernyak, Alexander V.
- Moskvin, Yuriy L.
- Frolova, Lubov A.
- Pshenichnikov, Maxim S.
- Troshin, Pavel A.
DOIAbstract
We show that extended TBTBT structure (T = thiophene, B = benzothiadiazole) can be used as an electron-deficient building block for designing conjugated polymers with deeply lying HOMO energy levels and narrow band gaps. The first carbazole-TBTBT copolymer P2 demonstrated power conversion efficiencies exceeding 6% in bulk heterojunction solar cells in combination with advanced operational stability, unlike conventional donor polymers such as PTB7, PBDTTT-CF, etc.</p
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