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在前体溶液中的链型顺序和聚合影响了p-doped P3HT 片的电荷移动性

Qing Zhang¹, Zhaoyang Chu¹, Jintao Du¹

¹National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, 230026, China.

Macromolecular rapid communications

|February 27, 2025

概括

为有机场效应晶体管 (OFET) 优化合聚合物薄膜需要平衡载体密度和链聚合. 一种新的加工方法提高了聚合物链的顺序,从而改善了多化聚3-基 (P3HT) 薄膜的电子传输特性.

科学领域:

材料科学材料科学材料科学
有机电子有机电子
聚合物化学聚合物化学

背景情况:

结合聚合物薄膜中的电传输取决于电荷载体密度和链聚合.
化学兴奋剂增加了载体度,但引入了杂质,阻碍了聚合物链的排序.
这为有机场效应晶体管 (OFET) 等应用提供了兴奋剂水平和聚合之间的权衡.

研究的目的:

为了研究与2,3,5,6-四-7,7,8,8-四亚诺二甲 (F4TCNQ) 合的聚3-基 (P3HT) 中的加工结构-性能关系.
探索微流体和超声波场辅助溶液处理策略 (FU) 如何影响链形状顺序和电子特性.
为了确定链长度,聚合和OFET性能之间的相关性.

主要方法:

使用微流体和超声波现场辅助策略 (FU) 处理聚3-甲 (P3HT) 的溶液.
兴奋剂P3HT含有低水平 (1重量%) 的2,3,5,6-四化-7,7,8,8-四亚诺基因二甲 (F4TCNQ).
使用紫外线吸收,X射线散射和X射线吸收光谱学的表征.

主要成果:

FU处理策略显著增强了链形状顺序,导致较长的结合长度和最佳的聚合包装在P3HT溶液中.
在FU加工的P3HT中,1%重量的F4TCNQ兴奋剂水平在相应的薄膜中显示出最高的移动性.
链长与OFET性能的相关性比宏观晶度更强.

结论:

微流体和超声波场辅助 (FU) 处理方法有效地改善了溶液中合聚合物链的顺序.
优化的链接连接长度和聚合包装对于OFETs的合P3HT薄膜中高电荷载体的移动性至关重要.
链联长度是一个比晶度更为内在的参数,用于理解联聚合物中的电荷传输.

关键词:

结合聚合物的聚合物.微流体中的微流体.有机文件效应晶体管在p型兴奋剂中使用p型兴奋剂.超声波的使用方法

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