2D and 1D Heterojunction and Heterodimensional Devices for Optoelectronics

用于光电子学的 2D 和 1D 异质结和异维器件

• 批准号: 0117073
• 负责人: Bahram Nabet
• 金额: $ 30万
• 依托单位: Drexel University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-08-01 至 2005-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0117073&HistoricalAwards=false
• 关键词: 2D; 1D; Heterojunction; Heterodimensional; Devices

Abstract: The intent of this proposal is to study and exploit to advantage some of the properties arising from confinement of electron motion to less than three dimensions. The study of confined electron behavior has had tremendous technological impact on all semiconductor devices including transistors, light emitters, and sensors. Our particular focus is on the design, study, fabrication, characterization, and testing of novel optical detectors that use altered regime of conduction due to reduced dimensionality to simultaneously achieve: a) low dark current due to the effect of the electron cloud, b) high responsivity due to the aiding electric field that confines the electron cloud, c) high speed due to reduction of absorption depth and inclusion of a Bragg reflector that forms a resonant cavity structure, and d) wavelength-filtering capability due to Bragg condition. A comprehensive device modeling and simulation with particular stress on the study of transient behavior will be performed. Next generation devices based on different material systems will be constructed and the study of contacts between 3D and 2D will be extended to the case of metallic contacts to 1D wires. In short, we propose a fundamental study of confined electron effects that contributes to the development of a family of novel devices. These devices constitute all the required elements for making a complete high sensitivity optical sensor, be it a near infrared detector for biological imaging or a gigabit Ethernet receiver.

摘要：这项提议的目的是研究和利用电子运动限制在三维以下所产生的一些性质。对受限电子行为的研究对包括晶体管、发光器和传感器在内的所有半导体器件都产生了巨大的技术影响。我们特别关注新型光学探测器的设计、研究、制造、表征和测试，这些探测器使用由于降维而改变的传导模式来同时实现：a)由于电子云的影响而产生的低暗电流，b)由于限制电子云的辅助电场而产生的高响应率，c)由于吸收深度减小而导致的高速以及由于形成谐振腔结构的Bragg反射器的包含，以及d)由于Bragg条件而具有波长过滤能力。将进行全面的器件建模和仿真，重点是研究暂态行为。基于不同材料体系的下一代器件将被构建，对3D和2D之间接触的研究将扩展到金属接触到一维线的情况。简而言之，我们提出了对受限电子效应的基础研究，这有助于开发一系列新的器件。这些设备构成了制造一个完整的高灵敏度光学传感器所需的所有元素，无论是用于生物成像的近红外探测器还是千兆以太网接收器。