末端功能基团对聚(3-丁基噻吩)光电性能的影响

应用化学, 2014, 31(1): 20-24. doi: 10.3724/SP.J.1095.2014.30152

末端功能基团对聚(3-丁基噻吩)光电性能的影响

1.中国科学院长春应用化学研究所长春130021;中国科学院大学北京100049

2.中国科学院长春应用化学研究所长春130021;中国科学院大学北京100049

3.中国科学院长春应用化学研究所长春130021

4.中国科学院长春应用化学研究所长春130021

基金项目: 中国科学院太阳能行动计划(KGCX2-YW-399+9) 国家高技术研究发展计划(863)(2011AA050524) Solar Energy Initiative(KGCX2-YW-399 + 9)of the Chinese Academy of Sciences Hi-Tech Research and Development Program(863) of China(2011AA050524)

关键词：末端基团 , 聚(丁基噻吩) , 相容性 , 光电性能

Effect of Functional End-Group on Optoelectronic Properties of Poly(3-butylthiophene)

Keywords： end-group , poly (butylthiophene) , miscibility , optoelectronic property

研究了4种带有不同末端基团的聚(3-丁基噻吩)(P3BT)的光电性能.结果表明,末端基团对P3BT的结晶有一定的抑制作用,可以改变P3BT的表面能,从而有效调控P3 BT∶ PCBM共混体系相容性以及薄膜的形貌,并影响以P3BT为给体材料的聚合物光伏器件的性能.其中,带有较短烷基链末端基团的烯丙基封端P3BT具有较高的结晶性,与PCBM具有适中的相容性,使得光伏器件的光敏层能够形成理想的微相分离结构,器件效率可以达到3.1％,较传统的溴封端P3BT器件效率提升35％以上.

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