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通过Stille法将呋喃衍生物苯并二呋喃(BDF)引入共轭主链,合成了苯并二呋喃-呋喃-苯并恶二唑共聚物(Polymer 1,简称P1).以紫外吸收光谱分析了聚合物溶液及其膜的基本光谱特征,通过理论计算进行了分子模拟,并用电化学循环伏安法测定了其基本的电化学性质.采用此材料为给体,PC71BM为受体制备了本体异质结型的有机太阳能电池器件,同时研究了不同给/受体重量比的情况下以及1,8-二碘辛烷作为添加剂的情况下的光伏器件性能.结果表明,P1聚合物在可见光区具有较大吸收.由P1所制得的光伏器件,在AM1.5的模拟太阳光照射条件下最高的转化效率为2.96%,表明BDF基团的引入可实现窄带隙的光电聚合物.
The benzodifuran (BDF) derivative was synthesized by Stille method to synthesize a benzodifuran-furan-benzoxadiazole copolymer (Polymer 1, referred to as P1) .Ultraviolet absorption spectroscopy Polymer solution and its basic spectral characteristics of the film, the theoretical calculation of the molecular simulation and electrochemical cyclic voltammetry was measured for its basic electrochemical properties.Using this material as a donor, PC71BM acceptor for the preparation of the ontology Heterojunction type organic solar cell devices, and at the same time studied the performance of the photovoltaic devices with different donor / acceptor weight ratio and 1,8-diiodooctane as an additive.The results show that the P1 polymer in visible light The maximum absorption efficiency of the photovoltaic device prepared by P1 was 2.96% under the simulated sunlight irradiation condition of AM1.5, indicating that the introduction of BDF group can achieve a narrow bandgap photopolymer.