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3D conjugated architectures built by attaching four peripheral bithienyl, carbazole, and dithienopyrrole blocks on a twisted quaterthiophene core have been synthesized and evaluated as donor material in organic solar cells. Replacing bithienyl by carbazole and dithienopyrrole significantly increases the hole-mobility, thus a threefold increase of conversion efficiency correlated with a two-order of...
Conjugated systems built by connecting two electron-donor side-chains to a diketopyrrolopyrrole (DPP) core have been synthesized and evaluated as donor material in heterojunction organic solar cells. The effects of composition of the side-chain on the electronic properties of the conjugated system have been analyzed on first series of compounds containing various combinations of benzofuran, benzothiophene,...
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