液晶半导体共聚合物与高稳定性聚合物晶体管的分子内供体接受器构建块
Do Hwan Kim1, Bang-Lin Lee, Hyunsik Moon
1Display Laboratory, Materials and Device Institute, Samsung Advanced Institute of Technology, Samsung Electronics Co., Ltd., Yongin 446-712, Korea.
Journal of the American Chemical Society
|April 10, 2009
概括
研究人员开发了一种用于打印电子产品的新型液晶半导体聚合物. 这种材料实现了高电荷载体的移动性和稳定性,为先进的有机场效应晶体管 (OFET) 铺平了道路.
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:
- 控制液晶聚合物半导体中的分子组织对于可靠的印刷电子产品至关重要.
- 提高有机场效应晶体管 (OFET) 的性能需要了解液晶纳米结构和电稳定性.
- 实现与无形 (a-Si) 相当的性能是有机电子的关键目标.
研究的目的:
- 开发一种新的液晶半导体共聚物,以提高电子设备的性能.
- 为了研究共聚物的纳米结构及其电稳定性之间的关系.
- 为了使印刷电子产品的高排序的半导体层能够轻松制造.
主要方法:
- 合成了一种新型的供体-接受体液晶半导体共聚物:poly ((didodecylquaterthiophene-alt-didodecylbithiazole).
- 薄膜的制造及其液晶性质和自我组织的表征.
- 有机场效应晶体管 (OFET) 的电测试,以确定场效应的移动性和偏向应力稳定性.
主要成果:
- 合成的共聚合物表现出高场效移动性,高达0.33cm2/V·s.
- 该材料表现出良好的偏向应力稳定性,与无形 (a-Si) 相美.
- 观察到液晶薄膜的自发形成,具有结构异质性和偏好的pi-pi与基质平行堆叠.
结论:
- 这种新型的液晶半导体共聚物促进了高度排序的通道层的自下而上的组装.
- 这种方法可以开发易于加工,可靠和高性能有机场效应晶体管 (OFET).
- 这些发现有助于推进大面积印刷电子和光伏技术.
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