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Development of organic semiconductors is one of the most intriguing and productive topics in material science and engineering. Many efforts have been made on the synthesis of aromatic building blocks such as benzene, thiophene and pyrrole due to the facile preparation accompanied by the intrinsic environmental stability and relatively efficient properties of the resulting polymers. In the past, furan has been less explored in this field because of its high oxidation potential. Recently, furan has attracted obsession due to its weaker aromaticity, the greater solubilities of furan-containing π-conjugated polymers relative to other benzenoid systems and the accessibility of furan-based starting materials from renewable resources. This review elaborates the advancements of organic photovoltaic polymers containing furan building blocks. The uniqueness and advantages of furan-containing building blocks in semiconducting materials are also discussed. 相似文献
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设计、合成了侧链含有强吸电结构的丙二酸二丁酯受体单元与苯并[1,2-b:4,5-b′]二噻吩给体单元交替共聚物PBDTDT,研究了其热学、光学、电化学性质以及与受体PC71BM([6,6]-苯基C71丁酸甲酯)共混作为活性层制备成本体异质结聚合物有机太阳能电池的光伏性质,考察了PBDTDT与PC71BM不同比例时的光伏性能,当聚合物PBDTDT和PC71BM质量比为1∶3制备的器件,其开路电压达到了0.82 V,能量转换效率(PCE)为0.90%,短路电流为3.25 mA/cm2,填充因子FF为0.338,同时将其与同等工艺制备的poly(3-hexylthiophene)(P3HT)太阳能电池的光伏性能进行比较,相同工艺下制备的P3HT电池的开路电压仅为0.55 V,由PBDTDT制备的电池开路电压比P3HT电池的开路电压高出0.29V,同时分析了PBDTDT能量转换效率较P3HT低的原因. 相似文献
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有机太阳能电池(OSC)为典型的三明治结构,是以共轭类有机化合物为活性层材料将太阳光转换为电能,通过两个电极输出电流。这些有机物具有来源广、质量轻和可再生等优点,使得有机太阳能电池在清洁新能源领域备受关注。当前研究的焦点仍然是提高电池的光电转换效率,主要通过改善活性层材料、优化器件结构和界面修饰等途径。本文重点介绍了作者课题组在界面工程方面所做的代表性工作,通过引入含磺酸基团或羧酸基团的超支化结构的聚合物阴极修饰层材料,获得了高效的OSCs;合成了新颖的非共轭有机小分子电解质修饰层,制备了高达10.02%效率的单结正型OSCs。此外,还研究了简单的极性溶剂处理,如甲醇能够优化活性层形貌,提高电池器件的性能。 相似文献
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