低压有机晶体管具有无形分子门介电器
Marcus Halik1, Hagen Klauk, Ute Zschieschang
1Infineon Technologies AG, New Memory Platforms, Materials and Technology, Paul-Gossen-Strasse 100, 91052 Erlangen, Germany. marcus.halik@infineon.com
Nature
|October 22, 2004
概括
研究人员开发了低压有机薄膜晶体管 (OTFT),使用了一种新的自组装单层 (SAM) 介电. 这些高性能OTFT可实现高效,低功耗的电子产品,并可能有利于晶体管技术.
科学领域:
- 材料科学 材料科学 材料科学
- 有机电子 有机电子
- 纳米技术纳米技术
背景情况:
- 有机薄膜晶体管 (OTFT) 对于显示器和传感器等大面积电子设备至关重要.
- 目前的OTFT由于厚门介电材料 (>100 nm) 而遭受高工作电压 (>20 V).
- 厚厚的介电材料是必要的,以防止门泄漏电流,限制设备性能和功率效率.
研究的目的:
- 开发具有显著降低工作电压的OTFT的制造工艺.
- 研究分子自组装单层 (SAM) 作为超薄门介电材料的潜力.
- 提高OTFT适用于低功耗电子应用的适用性.
主要方法:
- 使用2.5纳米厚的分子自组装单层 (SAM) 作为门介电器制造OTFT.
- 在晶体管结构中集成一种高流动性的有机半导体 - - 五烯.
- 晶体管性能的表征,包括工作电压和门泄漏电流.
主要成果:
- 经过证明的OTFT在2V以下的电源电压下运行,与传统设备相比大幅减少.
- 达成的门泄漏电流低于具有SiO2介电物的先进场效应晶体管中的电流.
- 证实了超薄SAM介电物的高性能有机晶体管的有效性.
结论:
- 开发的基于SAM的门介电器可以在有机薄膜晶体管中实现低压操作.
- 这些发现显著改善了OTFT在电源敏感便携式设备中使用的前景.
- 分子SAM为先进的晶体管提供了有希望的替代方案,这些晶体管面临介电缩放和泄漏的挑战.
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