小分子聚合物混合半导体的结构和特性用于有机薄膜晶体管
Jihoon Kang1, Nayool Shin, Do Young Jang
1Department of Chemistry, Seoul National University, Seoul, 151-747, Korea.
Journal of the American Chemical Society
|August 30, 2008
概括
高分子量聚甲基 (PalphaMS) 能够在接口上分离TIPS-pentacene半导体,从而提高有机薄膜晶体管 (OTFT) 的性能. 这种优化可以提高解决方案处理设备的场效移动性和开/关比.
科学领域:
- 材料科学 材料科学 材料科学
- 有机电子 有机电子
- 聚合物科学 聚合物科学
背景情况:
- 溶液处理的有机薄膜晶体管 (OTFT) 对灵活的电子产品具有吸引力.
- 优化活动层对于提高OTFT性能至关重要.
- 6,13-bis ((三烯乙烯) 五烯 (TIPS-五烯) 是一个有前途的有机半导体.
研究的目的:
- 为了在结构和电气上表征TIPS-pentacene/poly(alpha-methylstyrene) (PalphaMS) 混合膜.
- 了解PalphaMS分子质量对混合物形态和半导体排序的影响.
- 优化混合活动层,以提高OTFT性能.
主要方法:
- 镜子中的中子反射率.
- 牧场发生率的X射线衍射.
- 在OTFTs的电气特性.
主要成果:
- 低分子质量的PalphaMS混合物仅在空气接口上显示了TIPS-pentacene分离.
- 高分子质量的PalphaMS混合物在空气和基质接口上都表现出强烈的TIPS-pentacene分离.
- 在与高分子质量PalphaMS混合物中观察到TIPS-pentacene的高晶度和所需的方向.
- 与整洁的TIPS-pentacene相比,TIPS-pentacene/PalphaMS混合活性层显示出更高的性能.
结论:
- 高分子质量的PalphaMS是在混合膜中实现TIPS-pentacene结构的关键.
- 优化的混合活性层可以提高OTFT性能,包括移动性和开/关比.
- 这些发现使解决方案可处理,高性能底门/底接触OTFTs.
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