为了寻找更优异的太阳能电池材料,通过stille偶联反应以2,2′-联噻吩作为给体单元,以4,7-二(3-己基噻吩-2-基)-5,6-二氟-[2,1,3]苯并噻二唑作为受体单元,合成了一种新型聚合物。通过引入支链和氟原子提高了聚合物的性质。利用傅里叶变换红外光谱仪和核磁共振氢谱仪表征了聚合物的结构,采用热重差热综合热分析仪表征了聚合物的热稳定性,并通过紫外-可见吸收光谱和循环伏安法研究了其光电性能。结果表明,聚合物的热分解温度为366℃,带隙为2.16eV,理论开路电压为1.02V,在聚合物太阳能电池的制备中可将其作为给体材料。
To explore better materials for polymer solar cells,a new polymer comprising of 2,2′-bithiophen as donor unite and 4,7-di(thien-2-yl)-5,6-difluorobenzo-[2,1,3] thiadiazole as acceptor unite was synthesized via stille coupling reaction.The property of polymer was improved via introducting of branched chain and fluorine atom.The structure was determined by infrared spectroscopy(IR) and nuclear magnetic resonance(NMR),thermal stability was characterized by thermogravimetric analysis(TGA),and its photoelectronic properties was investigated by ultraviolet-visible(UV-Vis) absorption spectroscopy and cyclic voltammetry.The theoretical open circuit voltage of 1.02V,thermal decomposition temperature of 366℃ and optical band gap of 2.16eV was provided by the new polymer.Therefore it was a kind of suitable donor material for the manufacture of polymer solar cells.
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基金资助
宁波自然科学基金(2014A610045);宁波科技富民项目(2015C50059);宁波大学王宽诚教育基金
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