改进了在n型有机晶体管中与合聚电解质的注入
Jung Hwa Seo1, Andrea Gutacker, Bright Walker
1Center for Polymers and Organic Solids, University of California, Santa Barbara, California 93106, USA.
Journal of the American Chemical Society
|December 9, 2009
概括
一个合聚电解质 (CPE) 层改善了有机薄膜晶体管 (OTFT) 中的载体注入. 这一策略通过在金属有机接口上组织二极体,有效降低n通道设备的开启电压.
科学领域:
- 有机电子学有机电子学
- 半导体设备物理学 半导体设备物理
- 材料科学是一种材料科学.
背景情况:
- 有机薄膜晶体管 (OTFT) 对于灵活的电子产品至关重要.
- 对于n型OTFT来说,高效的电荷载体注入仍然是一个挑战.
- 优化电极和有机半导体之间的接口是关键.
研究的目的:
- 为了增强载体注射在n型OTFTs.
- 为了降低n通道OTFT的开启值电压.
- 为了研究合聚电解质 (CPE) 间层的作用.
主要方法:
- 使用[6,6]--C(61) 黄油酸甲基 (PCBM) 半导体制造n通道的OTFT.
- 在Au电极和PCBM层之间插入一层薄的合聚电解质 (CPE) 层.
- 使用设备性能测量和紫外光发射光谱学 (UPS) 进行表征.
主要成果:
- 插入CPE层显著提高了载体注入效率.
- 对n通道OTFT的开启值电压进行了大幅降低.
- UPS数据显示,金属/有机界面形成了有组织的二极体,降低了电子注入屏障.
结论:
- 结合的多电解质中间层是改善n型OTFT性能的有效策略.
- 通过修改界面能量学,CPE促进了更好的电子注入.
- 这种方法为开发高性能有机电子设备提供了一个有希望的途径.
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