将电子和结构障碍参数与载体运输在现代合聚合物中联系起来
Gaurab J Thapa1,2, Mihirsinh Chauhan1, Rosemary R Cranston3
1Department of Materials Science and Engineering and Organic and Carbon Electronics Laboratories (ORaCEL), North Carolina State University, Raleigh, North Carolina 27695, United States.
ACS applied materials & interfaces
|August 30, 2024
概括
结合聚合物的结构障碍直接影响电荷传输. 较高的准晶度与增加的电子乱相关,并影响有机电子中的电荷载体移动性.
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.
- 聚合物物理 聚合物物理
背景情况:
- 结合聚合物中的电荷传输是有机电子学的关键.
- 结构性障碍会影响聚合物的电子性质,但这种联系尚不清楚.
- 了解这种关系对于设备优化至关重要.
研究的目的:
- 实验性地将聚合物结构秩序与电子能量景观联系起来.
- 量化对晶体形乱对电子乱的影响.
- 为了将微观结构-属性关系与宏观设备性能相关联.
主要方法:
- 使用扫描道显微镜/光谱 (STM/STS) 来探测PM6聚合物薄膜中的局部电子带边缘.
- 量化准晶体结构障碍,测量偏离理想的聚合物包装.
- 制造和特征化场效应晶体管 (FET) 和只有孔的二极管,以评估电荷载体的移动性和陷的影响.
主要成果:
- 在PM6薄膜中建立了更高的准晶度和增加的电子障碍之间的直接相关性.
- 证明微观结构和电子参数与宏观电荷载体移动性正相关.
- 显示了这些参数与有机电子设备中的陷影响之间的联系.
结论:
- 准晶体结构障碍是合聚合物中电子能量格局的关键决定因素.
- 微观结构和电子障碍直接影响有机电子中的电荷传输特性和设备性能.
- 这项工作为通过聚合物结构工程来理解和控制电荷传输提供了一个框架.
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