Daijun Zha, Lie Chen, Feiyan Wu, Hongming Wang and Yiwang Chen Donor–acceptor-integrated conjugated polymers based on carbazole[3,4-c:5,6-c]bis[1,2,5]thiadiazole with tight π–π stacking for photovoltaics Journal of Polymer Science Part A: Polymer Chemistry 51
An original strategy to construct a new donor–acceptor-integrated structure has been developed. Extremely short π–π stacking distance of 0.32 nm has been achieved for PCBTT in solid states. A broadened light harvesting of the resulting copolymer coversthe solar flux from 300 to 750 nm with a low-lying HOMO energy level of −5.30eV.
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