通过在新型半导体聚合物中用替代,在高度定向的薄膜中增强光电子异性
Shubham Sharma1, Moulika Desu1, Guan-Lin Chen2
1Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology, 2-4 Hibikino, Wakamatsu, Kitakyushu, Fukuoka 808-0196, Japan.
ACS applied materials & interfaces
|September 17, 2024
概括
新型半导体聚合物 (SCPs) 设计和合成了含有二甲单位的半导体聚合物. 高度定向的片实现了创纪录的光学异构性和高电荷载体移动性,用于先进的塑料电子.
科学领域:
- 有机电子学有机电子学
- 材料科学是一种材料科学.
- 聚合物化学 聚合物化学
背景情况:
- 半导体聚合物 (SCP) 对于灵活,轻量化和经济高效的电子设备至关重要.
- 持续需要具有增强电子和光电子性能的新型SCP.
研究的目的:
- 设计,合成和利用基于多聚合物的新型捐赠者-接受者 (D-A) SCP,其中包含二甲基.
- 研究替代对脊柱平面性和薄膜性质的影响.
- 优化有机场效应晶体管 (OFET) 中的电荷传输和设备性能.
主要方法:
- 密度函数理论 (DFT) 计算来评估骨干平面性.
- 单向浮动薄膜转移方法 (UFTM) 用于制造高度定向的薄膜.
- 用X射线衍射 (XRD) 和原子力显微镜 (AFM) 进行结构特征.
- 有机场效应晶体管 (OFET) 的制造和表征.
主要成果:
- 通过DFT计算,替代被证实可以增强骨干平面性.
- 通过UFTM,可以制造具有高光学异质性 (二重比高达19.3) 的高度定向的PC20-FT薄膜.
- 观察到更长的基链长度增加了结晶性和域大小.
- 在OFET中实现了异构电荷传输,移动性为1.24 cmÂ2Vâ 1sâ 1和移动性异构性为39.5.5.
结论:
- 该研究展示了高性能SCP的有效设计原则.
- 结合二甲基和利用UFTM显著增强光学异构性和电荷传输.
- 这些发现为先进的塑料电子和柔性设备铺平了道路.
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