在高流动性合聚合物中接近无混乱的运输
Deepak Venkateshvaran1, Mark Nikolka1, Aditya Sadhanala1
1Optoelectronics Group, Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge CB3 0HE, UK.
Nature
|November 11, 2014
概括
研究人员为灵活的电子产品开发了新的合聚合物. 这些材料表现出几乎无障碍的电荷传输,克服了聚合物半导体性能和设计的关键限制.
科学领域:
- 材料科学 材料科学 材料科学
- 有机电子 有机电子
- 聚合物化学 聚合物化学
背景情况:
- 结合聚合物对于低成本,灵活的半导体设备至关重要.
- 尽管取得了进展,但电荷传输仍受到聚合物薄膜中的混乱所限制.
- 这种障碍阻碍了材料设计和研究电子移位.
研究的目的:
- 为了研究高流动性合聚合物的电荷传输特性.
- 识别分子设计,最大限度地减少混乱和接近内在的运输极限.
- 了解改进充电运输的结构起源.
主要方法:
- 使用场效应调制的Seebeck,晶体管和光学吸收测量的比较运输研究.
- 对一种特定的基于 indacenodithiophene 的供体-受体共聚合物的分析.
- 分子动力学模拟以探测脊柱形状和障碍弹性.
主要成果:
- 几种高流动性聚合物表明,电荷传输接近无混乱的极限.
- 一种特定的供体-接受体共聚物表现出一种近乎无形的微观结构,具有出色的传输能力.
- 分子动力学揭示了平面的,没有扭曲的脊椎作为克服障碍的关键.
结论:
- 在合聚合物中实现无乱运输是可能的.
- 平面,无扭曲的骨干形状对于高性能至关重要.
- 这些发现为下一代有机半导体提供了设计原则.
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