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- W2325845057 abstract "The photoelectric power conversion efficiency of organic or polymeric solar cells can be improved via optimizations in both space and energy/time domains. Specifically, at spatial domain, a ‘tertiary’ block copolymer supra-molecular nano structure has been designed, and a series of –DBABtype of block copolymers, where D is a conjugated donor block, A is a conjugated acceptor block, and B is a non-conjugated and flexible bridge unit, have been synthesized, characterized, and preliminarily examined for target photovoltaic functions. For instance, in comparison to simple donor/acceptor (D/A) blend film, a corresponding DBABblock copolymer film exhibited much better photoluminescence (PL) quenching and photo conductivity. These are attributed mainly to spatial domain improvement for charge carrier generation and transportation. At materials energy levels and electron transfer dynamic regime, theoretical simulation shows the photo induced charge separation appears most efficient when the donor/acceptor frontier orbital energy offset approaches the sum of two major energy costs: the charge separation reorganization energy and the exciton binding energy. Other donor/acceptor frontier orbital energy offsets are also identified where the charge recombination becomes most severe, and where the charge separation rate constant over charge recombination rate constant become largest." @default.
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- W2325845057 date "2004-08-16" @default.
- W2325845057 modified "2023-09-27" @default.
- W2325845057 title "Conjugated Block Copolymers for Photovoltaics: Optimization of Photoelectric Power Conversion Efficiency in Both Space and Energy/Time Domains" @default.
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- W2325845057 doi "https://doi.org/10.2514/6.2004-5511" @default.
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