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A new low band gap (optical band gap=1.62eV) polymer (TTQ) based on thiophene and thienyl-quinoxaline by substituting phenyl in quinoxaline unit for thiophene rings was synthesized and characterized for application in polymer solar cells (PSCs). The optical band gap (E gopt ) deduced from the onset (765nm) of the polymer absorption spectrum in the films was 1.62eV, which was less than...
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