两个电离子狭带间隙结合聚电解质的合成和特性
Zachary B Henson1, Yuan Zhang, Thuc-Quyen Nguyen
1Center for Polymers and Organic Solids, Department of Chemistry & Biochemistry, University of California, Santa Barbara, California 93106, USA.
Journal of the American Chemical Society
|March 6, 2013
概括
新型离子聚合物表现出独特的n型半导体特性,与它们的中性对应物不同. 这种离子功能化改变了电子能量水平和吸收光谱,为电子应用中的材料设计提供了新的途径.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
- 有机电子 有机电子
背景情况:
- 结合多电解质 (CPE) 对于先进的电子设备至关重要.
- 窄带间隙联聚电解质 (NBGCPEs) 提供可调节的光学和电子性能.
- 了解离子功能化对聚合物特性的影响对于优化性能至关重要.
研究的目的:
- 设计和合成新的阴性NBGCPE.
- 研究这些新材料的光学和电子特性.
- 将它们的特性与中性前体聚合物进行比较,并探索电荷传输机制.
主要方法:
- 合成两种具有特定供体/接受体骨干的新型NBGCPEs.
- 光学属性的表征 (吸收光谱).
- 电子能量水平的评估 (HOMO/LUMO).
- 薄膜晶体管 (TFT) 的制造和测试,以确定电荷传输类型.
主要成果:
- 与中性前体相比,离子成分诱导了吸收光谱的红移.
- 无论是HOMO和LUMO的能量水平都降低了,并观察到对子离子依赖的效应.
- 在薄膜晶体管中观察到意想不到的n型电荷传输,与典型的p型行为形成鲜明对比.
结论:
- 离子功能化显著改变了NBGCPE的光学和电子特性.
- 选择的 counterion 影响能量水平的修改.
- 发现n型传输为设计具有针对电子应用的定制功能的半导体聚合物开辟了新的可能性.
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