新型烷基芴共聚物太阳电池材料的合成及光伏性质
Synthesis and Photovoltaic Properties of New Polyfluorene Copolymer for Plastic Solar Cells
作者：吴江勇(四川大学 化学学院,四川 成都 610064)；宋保风(四川大学 化学学院,四川 成都 610064)；於黄中(华南理工大学 高分子光电材料与器件研究所, 广东 广州 510640)
Author：(School of Chemistry , Sichuan Univ., Chengdu 610064,China)；(School of Chemistry , Sichuan Univ., Chengdu 610064,China)；(Inst. of Polymer Optoelectronic Materials and Devices, South China Univ.of Technol., Guangzhou 510640, China)
收稿日期：2007-05-17 年卷（期）页码：2008,40(1):81-85
期刊名称：工程科学与技术
Journal Name：Advanced Engineering Sciences
关键字：聚烷基芴；共聚物；聚合物太阳电池；Suzuki偶联；光伏性质
Key words：polyfluorene;copolymer;dicyanomethylenefluorene;Suzuki coupling reaction; plastic solar cells;photovoltaics
基金项目：博士点基金资助项目（20030610069）；教育部重点资助项目（105142）；四川省青年基金资助项目（03SQ04）.
中文摘要
合成了主链含有二腈基亚甲基芴结构单元的聚烷基芴光伏材料，通过红外和核磁对其进行了表征。目标共聚物PBTCNF的热分解温度为448.1 ℃，玻璃化温度(Tg)为146.6 ℃，具有良好的热稳定性和加工性能。该种材料对太阳光的吸收在300 ~700 nm范围内，基本覆盖了整个可见光区域。电化学分析得出其具有较好的氧化还原可逆性，并且具有1.86 eV的相对较窄的能带宽度。将此聚合物与PCBM掺混制作太阳电池，得到光伏器件的最大能量转换效率为0.016%，开路电压为0.75 V，短路电流为0.082 mA/c
英文摘要
A photovoltaic material based on fluorene having dicyanomethylenefluorene unit in the main chain were synthesized,and characterized by FT IR and NMR. The polymer possess satisfactory thermal stability and machinability with thermal decomposition temperature (Td) of 448.1 ℃ and glass transition temperature (Tg ) of 146.6 ℃. The materials perform a good absorption around about 300~700 nm, covering a large part of the visible spectrum. Their effective reversibilities of redox were determined, and a correspondingly low bandgap of 1.86 eV was obtained. A photocurrent density of 0.079 mA/cm2, open circuit voltage of 0.75 V, fill factor of 0.249 and power conversion efficiency of 0.016% were achieved under illumination of AM 1.5 from a solar simulator.
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