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.

这项研究的目的是评估单晶基和多晶有机晶体管的速度电场特征。 该方法是使用直流和瞬态测量值来测量高达106 v/cm的电场的速度。 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。 瞬态测量涉及测量通道形成时间和速度信息的提取。智能优点：电荷载体速度 - 电场的知识对于理解有机晶体管中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，研究小组通常不常规地进行此类测量。拟议的工作将满足这一需求并填补这一空白。此外，拟议的研究将使捕获现象的表征及其对晶体管的转弯和关闭特征的影响。 这将在设计基于有机晶体管的电路和系统（例如显示）中很有用。陷阱现象在薄膜晶体管中尤其重要。BoaderImpact。 少数民族和女学生将获得研究机会，从而增强劳动力多样性。 与美国行业的互动将导致从这项工作和协作工作产生的信息传递知识。向地区学校的宣传将促进此类学生对科学和工程的兴趣。