基于基终结有机半导体的场效应晶体管用于酸盐蒸汽检测
Jia Huang1, Joseph Miragliotta, Alan Becknell
1Department of Materials Science and Engineering, Johns Hopkins University, Baltimore, MD 21218, USA.
Journal of the American Chemical Society
|July 13, 2007
概括
新的有机场效应晶体管 (OFET) 在检测神经毒剂模拟剂方面表现出高灵敏度和选择性. 基功能化晶体管在化学传感技术中提供了一个有前途的进步.
科学领域:
- 材料科学 材料科学 材料科学
- 化学传感器 化学传感器
- 有机电子 有机电子
背景情况:
- 有机场效应晶体管 (OFET) 对于开发先进的电子设备至关重要.
- 检测神经毒剂等有毒化学物质需要高度敏感和选择性的传感器.
研究的目的:
- 开发和描述具有基组的功能化OFET,以提高对酸盐神经毒剂模拟剂的检测.
- 研究这些异构OFET的灵敏性和选择性.
主要方法:
- 用混合氧化和非氧化半导体上层制造OFET.
- 制造OFET暴露于二甲基甲基酸盐 (DMMP) 蒸汽和各种干扰蒸汽.
- 使用扫描电子显微镜 (SEM) 和X射线衍射 (XRD) 进行有机半导体 (OSC) 微结构的表征.
主要成果:
- 在暴露于DMMP蒸气后,OFET显示出源-排水电流的强烈和可重复的变化.
- 与单元晶体管相比,混合半导体层的灵敏度明显更高.
- 异构的OFETs显示出优异的选择性,即使在较低度的DMMP,其对DMMP的反应也远高于其他分析品.
- SEM和XRD分析证实,性能增强是由于化学性质而不是微观结构变化.
结论:
- 基功能化OFET为神经毒剂模拟剂的敏感和选择性检测提供了一个有前途的平台.
- 混合半导体层的化学特性是提高传感性能的关键.
- 这些发现为开发下一代用于安全和安全应用的化学传感器铺平了道路.
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