为高性能有机场效应晶体管降低氧气诱导的屏障
Yao Fu1, Jie Zhu1, Yajing Sun1
1Key Laboratory of Organic Integrated Circuits, Ministry of Education, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, Institute of Molecular Aggregation Science, Tianjin University, Tianjin 300072, China.
ACS nano
|July 24, 2023
概括
研究人员开发了一种氧气诱导的策略,以显著降低有机场效应晶体管 (OFET) 的接触电阻. 这一突破使OFET设备的性能提高和小型化成为可能.
科学领域:
- 材料科学 材料科学 材料科学
- 有机电子 有机电子
- 半导体物理 半导体物理
背景情况:
- 有机场效应晶体管 (OFET) 提供低成本,大面积处理,适合新兴应用.
- 在OFET中,高接触电阻 (Rc) 阻碍了设备集成和小型化.
- 由于轨道合和屏障高度之间的权衡,减少Rc是具有挑战性的.
研究的目的:
- 开发一种新的策略来降低OFET的接触阻力.
- 为了研究氧气对OFET金属半导体接口的影响.
- 为了实现OFET设备的超低接触电阻和高移动性.
主要方法:
- 将氧气 (O2) 引入电极和有机半导体之间的纳米界面.
- 接触电阻和设备性能的实验测量.
- 理论模拟以了解O2吸附机制.
主要成果:
- 实现了超低通道宽度正常化接触电阻 (Rc·W) 的89.8 Ω·cm.
- 获得了11.32 cm2 V-1 s-1.1 的高电荷载体移动性.
- 通过O2吸附在金属半导体接触处显著减少Rc.
结论:
- 氧气诱导的屏障降低是减少OFET接触电阻的有效策略.
- 这些发现为制造高性能小型OFET提供了指导.
- 这种方法有助于将OFET集成到先进电子应用中.
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