具有高孔移动性和异常聚合行为的替代的桥式有机半导体
Toshihiro Okamoto1,2,3, Masato Mitani1, Craig P Yu1
1Material Innovation Research Center (MIRC) and Department of Advanced Materials Science, School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan.
一种新的有机半导体C10-DNS-VW为电子产品提供了高溶解性和载体移动性. 这种材料克服了可溶性-可加工性的权衡,使先进的溶液加工技术成为可能.
科学领域:
- 材料科学
- 有机电子
- 半导体物理
背景情况:
- 对于下一代有机半导体 (OSC) 来说,高载体流动性至关重要.
- 实现高流动性通常涉及二维聚合结构,这些结构通常具有较差的溶解性和有限的解决方案可加工性.
- 在OSC发展中,移动性和可处理性之间存在关键的权衡.
研究的目的:
- 开发一种新的有机半导体,克服高载体流动性和良好的溶解性之间的权衡.
- 合成和表征一个V形双甲衍生物与二甲基替代剂 (C10-DNS-VW).
- 调查C10-DNS-VW的自组装和充电传输特性.
主要方法:
- 使用十基替代剂 (C10-DNS-VW) 有效合成五环结合的V形双.
- 在不同的晶体生长条件下研究分子包装图案 (1D和2D).
- 使用溶液处理和真空沉积制造薄膜.
- 外部应力测试 (加热,溶剂蒸汽) 来研究动图的稳定性.
- 设备制造和载体移动性和晶体管稳定性的表征.
主要成果:
- C10-DNS-VW具有显著的高溶解度,促进了溶解过程.
- 这种材料可以根据晶体生长条件形成1D π堆叠或2D鱼骨 (HB) 包装图案.
- 通过溶液或真空沉积制造的薄膜主要形成2D HB图案.
- 外部应力测试表明1D和2D动机可以通过平衡分子间相互作用来诱导.
- 通过溶液处理的单晶薄膜在环境条件下达到11cm^2V^-1s^-1的载体移动性,并且在两个多月内保持稳定的晶体管性能.
结论:
- C10-DNS-VW成功地打破了载体移动性和有机半导体中的溶解性之间的权衡.
- 该材料在受控条件下能够形成不同的包装图案,为设备制造提供了多功能性.
- 高载体移动性和稳定性使C10-DNS-VW成为溶液处理有机电子的有希望的候选者.
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