相对子体大小和兴奋剂度的组合决定了半导体聚合物的电子和热电性质
Kyle N Baustert1, Joel H Bombile2, Md Tawabur Rahman1
1Department of Chemistry, University of Kentucky, Lexington, KY, 40506, USA.
Advanced materials (Deerfield Beach, Fla.)
|April 30, 2024
概括
对比尺寸显著影响有机半导体 (OSC) 性能. 较大的离子在低兴奋剂模式和热电性能中增强导电性,而高兴奋剂导电性取决于薄膜乱.
科学领域:
- 材料科学 材料科学 材料科学
- 有机电子 有机电子
- 固态化学 固态化学
背景情况:
- 其他国家在杂有机半导体 (OSC) 中平衡电荷.
- 讨论了乡村大小对OSC物业的影响.
- 了解这种关系对于优化OSC性能至关重要.
研究的目的:
- 解决关于乡村规模如何影响OSC财产的争论.
- 为了区分离子大小在低兴奋剂和高兴奋剂制度中的影响.
- 为了研究 counterions 对电导率和热电特性的影响.
主要方法:
- 在OSCs中对兴奋剂制度的理论分析.
- 建模库伦结合能和介电效应.
- 使用区域常规的聚3-基thiophene (rr-P3HT) 的实验研究.
主要成果:
- 在低兴奋剂中,较大的 counterions 减少库伦相互作用,增加电荷移位和导电性.
- 在高兴奋剂中,导电性主要受形态障碍的支配,库伦效应可以忽略不计.
- 较小的 counterions 在低兴奋剂时增加了rr-P3HT中的双色球度.
- 较大的 counterions 在 rr-P3HT 中增强了热电功率因子.
结论:
- 电流尺寸在确定OSC电气和热电性能方面起着至关重要的作用.
- 兴奋剂制度决定了对比子体大小影响导电性的机制.
- 战略性选择的 counterions 可以优化 OSC 性能特定应用.
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