Chain-Folded Polymer Crystal Electronic Devices

链折叠聚合物晶体电子器件

• 批准号: 8803156
• 负责人: Paul H. Meijer
• 金额: --
• 依托单位: Catholic University of America
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-08-15 至 1992-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8803156&HistoricalAwards=false
• 关键词: Chain; Folded; Polymer; Crystal; Electronic

The PI's will investigate chain-folded polymer crystals as possible electronic devices. It has been demonstrated experimentally that single crystals of polymers show negative resistance and hence can be used as active devices. Our recent theory 3 shows that the operating principle of these devices is tunneling and that there are potential practical device applications possible. Lacking further information on these systems beyond the original measurements, it is mandatory to obtain a complete set of experimental parameters, before we will be able to use these crystals in devices. The work will consist of growing high-quality polyethylene crystals and testing their current-voltage (IV) characteristics for a variety of parameters: quality of the crystals, thickness of the crystal, choice of different metal electrodes, and temperature dependence. Secondly, in order to establish switching speeds, we want to make ac measurements on these devices by time domain spectroscopy (pulse method) using automated instrumentation. The instrumentation for this method will be built, using the methods pioneered at the National Bureau of Standards by Mopsik, and will be useful for general use in dielectric measurements.

PI将研究链折叠聚合物晶体作为可能的电子器件。实验表明，聚合物单晶显示负电阻，因此可以用作有源器件。我们最近的理论3表明，这些器件的工作原理是隧道效应，并且有潜在的实际器件应用可能。除了原始测量之外，缺乏关于这些系统的进一步信息，在我们能够在设备中使用这些晶体之前，必须获得一套完整的实验参数。这项工作将包括生长高质量的聚乙烯晶体，并测试其电流-电压（IV）特性的各种参数：晶体的质量，晶体的厚度，不同金属电极的选择和温度依赖性。其次，为了建立开关速度，我们希望使用自动化仪器通过时域光谱（脉冲法）对这些器件进行交流测量。将建立这种方法的仪器，使用的方法开创了国家标准局的Mopsik，并将是有用的一般用途在介电测量。