在有机半导体中打破移动性-稳定性二分法,通过自适应性表面兴奋剂
Zhaofeng Wang1,2, Xianshuo Wu1,2, Siyuan Zhang1,2
1Key Laboratory of Organic Integrated Circuit, Ministry of Education & Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, China.
概括
适应性表面兴奋剂 (ASD) 通过优化电荷传输和消极缺陷来增强有机半导体 (OSC). 这一突破提高了下一代灵活电子产品的移动性和运行寿命.
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:
- 有机半导体 (OSC) 在电荷载体的移动性和运行稳定性之间面临着关键的权衡.
- 现有的方法难以同时改善OSC设备中的两个性能指标.
研究的目的:
- 引入和评估自适应表面兴奋剂 (ASD) 作为一种新的策略,以克服OSC的移动性-稳定性二分法.
- 为了证明ASD在提高充电传输和设备寿命方面的能力.
主要方法:
- 对有机半导体进行自适应表面剂 (ASD) 技术的开发.
- 陷状态被动化和能量水平变化的分析.
- 电荷载体移动性和设备运行寿命的表征.
主要成果:
- ASD有效地使陷状态无能化,将它们的能量水平从84 meV降至14 meV,高于价值带边缘.
- 观察到从跳跃到带状运输机制的过渡.
- 载体的移动性增加了60%以上,达到30.7 cm2 V−1 s−1.1.
- 被处理的设备的外推运行寿命超过了57.5年.
结论:
- 适应性表面兴奋剂 (ASD) 成功解决了有机半导体内在的移动性-稳定性权衡问题.
- ASD提供了一种强大的方法,可以同时提高OSC设备的性能和稳定性.
- 这一战略为先进的灵活电子应用铺平了道路.
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