Evaluation of Carrier Velocity in Organic Single Crystal and Polycrystalline Thin-Film Transistors and Development of a Velocity-Field Model

有机单晶和多晶薄膜晶体管中载流子速度的评估以及速度场模型的开发

• 批准号: 0901683
• 负责人: Ananth Dodabalapur
• 金额: $ 31.13万
• 依托单位: University of Texas at Austin
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-08-01 至 2012-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0901683&HistoricalAwards=false
• 关键词: Evaluation; Carrier; Velocity; Organic; Single

The objective of this research is to evaluate the velocity-electric field characteristics of single crystal based and polycrystalline organic transistors. The approach is to use both DC and transient measurements to measure the velocities at electric fields up to 106 V/cm. DC measurements involve the extraction of velocities from the output characteristics of a set of small-channel length devices. Transient measurements involve the measurement of channel formation time and the extraction of velocity information.Intellectual Merit: Knowledge of the charge carrier velocity-electric field relationship is important in understanding charge transport mechanisms in organic transistors. Such measurements are not routinely done by research groups due to the requirement of specialized instrumentation, device structures, and measurement methods. The proposed work will address this need and fill this gap. Additionally, the proposed research will enable the characterization of trapping phenomena and its effects on the turn-on and turn-off characteristics of transistors. This will be useful in designing circuits and systems such as displays based on organic transistors. Trapping phenomena are especially important in thin-film transistors.Broader Impact.: This work will lead to the continued development of coursework in organic electronics as well as the production of trained human resources for industry/academia including Ph.Ds. Minority and women students will be given research opportunities leading to enhanced diversity in the workforce. Interactions with US-based industries will lead to knowledge transfer of information generated from this work and collaborative work. Outreach to area schools will promote interest in science and engineering among such students.

本研究的目的是评估单晶和多晶有机晶体管的速度电场特性。 该方法是使用直流和瞬态测量来测量高达 106 V/cm 的电场速度。 直流测量涉及从一组小通道长度设备的输出特性中提取速度。 瞬态测量涉及通道形成时间的测量和速度信息的提取。智力优点：了解电荷载流子速度-电场关系对于理解有机晶体管中的电荷传输机制非常重要。由于需要专门的仪器、设备结构和测量方法，研究小组通常不会进行此类测量。拟议的工作将满足这一需求并填补这一空白。此外，所提出的研究将能够表征俘获现象及其对晶体管开通和关断特性的影响。 这对于设计电路和系统（例如基于有机晶体管的显示器）非常有用。俘获现象在薄膜晶体管中尤其重要。更广泛的影响：这项工作将导致有机电子学课程的持续发展，以及为工业/学术界培养经过培训的人力资源，包括博士。 少数族裔和女学生将获得研究机会，从而增强劳动力的多样性。 与美国行业的互动将导致这项工作和协作工作产生的信息的知识转移。向地区学校进行推广将提高这些学生对科学和工程的兴趣。