在高温下表现出稳定的电荷传输的半导体聚合物混合物
Aristide Gumyusenge1, Dung T Tran1, Xuyi Luo1
1Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, IN 47907, USA.
Science (New York, N.Y.)
|December 8, 2018
概括
开发热稳定的半导体聚合物混合物使高温电子成为可能. 这一策略可以在高达220°C的有机半导体中实现稳定的载体流动性,克服了先进电子应用的关键挑战.
科学领域:
- 材料科学
- 有机电子
- 聚合物化学
背景情况:
- 在许多电子应用中,高温操作 (>150°C) 是至关重要的.
- 在高温下实现有机半导体的稳定载体流动性是一个重大挑战.
- 现有的有机半导体材料在高温下往往会降解或丧失功能.
研究的目的:
- 为制造高温电子产品的热稳定半导体聚合物混合物制定总体策略.
- 在高温下研究这些混合物的电荷传输特性.
- 在超过150°C的有机半导体中实现稳定和高载体流动性.
主要方法:
- 聚合物混合物的制造,包括相互穿透的半晶结合聚合物和高玻璃过渡温度绝缘基质.
- 基于这些聚合物混合物的薄膜晶体管 (TFT) 的表征.
- 测量充电传输特性,特别是洞的移动性,在广泛的温度范围内 (室温至220°C).
主要成果:
- 工程聚合物混合物具有热稳定的半导体特性.
- 观察到一种对温度不敏感的电荷传输行为.
- 在TFT中,从室温保持到220°C的孔移动性超过2.0cm2/V·s.
结论:
- 已经证明了制造高温有机半导体的可行策略.
- 开发的聚合物混合物为在高温下稳定的电子设备运行提供了有前途的解决方案.
- 这项工作为有机电子在苛刻的热环境中的新应用铺平了道路.
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