Low-dimensional Tunable Infrared Detectors Based on a Novel Mask-less and Self-aligned Process

基于新型无掩模自对准工艺的低维可调谐红外探测器

• 批准号: 0621887
• 负责人: Hooman Mohseni
• 金额: $ 27万
• 依托单位: Northwestern University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-09-01 至 2010-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0621887&HistoricalAwards=false
• 关键词: Low; dimensional; Tunable; Infrared; Detectors

Low-dimensional Tunable Infrared Detectors Based on a Novel Mask-less and Self-aligned ProcessHooman Mohseni, Northwestern University0621887Intellectual Merit: It has long been predicted that low-dimensional devices should be able to produce mid- and long-wave infrared detectors that are wavelength selective, and can operate at or near room temperature. Therefore, significant research has been focused on quantum-dot-based infrared detectors. However, the difficulties involved in the processing of nanometer-size quantum dots have prevented successful demonstration of the predicted performance so far. The goal of this program is to develop a novel method for realization of electrically-tunable quantum dots that could avoid the above issues. A novel processing technique based on self-alignment and self-isolation will be used. Optimized devices will be evaluated, and the results will be used to fine-tune the processing over several cycles during the program. Broader Impacts: High performance mid- and long-wave infrared detectors that can operate at or near room temperature have significant impacts on many medical, industrial, and homeland security applications such as diagnosis of breast cancer, dental and thyroid diseases, fast detection of hidden cracks, and non-metallic landmine detection. Moreover, the method developed under this research program provides a unique approach to suppress phonon scattering and can significantly improve the performance of other devices including quantum cascade lasers and quantum computers. The novel processing methods proposed here should be applicable to a wide range of nano-devices. Also, the results of proposed nano-characterization methods will provide valuable information for the research community working on nano-scale optoelectronic devices. Undergraduate and graduate students from under-represented and minority groups will be encouraged to take part in this research. The project will take advantage of Alliances for Graduate Education and the Professorate program at Northwestern University in this regard.

基于新型无掩模和自对准工艺的低维可调谐红外探测器Hooman Mohseni，西北大学0621887智力优点：长期以来，人们一直预测低维器件应该能够生产波长为100nm的中波和长波红外探测器。具有选择性，并且可以在室温或接近室温下操作。因此，重要的研究集中在基于量子点的红外探测器上。然而，迄今为止，纳米级量子点加工过程中遇到的困难阻碍了预测性能的成功演示。该项目的目标是开发一种实现电可调量子点的新方法，从而避免上述问题。将使用基于自对准和自隔离的新型处理技术。将评估优化的器件，结果将用于微调程序期间多个周期的处理。更广泛的影响：可以在室温或接近室温下运行的高性能中波和长波红外探测器对许多医疗、工业和国土安全应用产生重大影响，例如乳腺癌、牙科和甲状腺疾病的诊断、快速检测隐藏的疾病裂纹和非金属地雷探测。此外，该研究项目开发的方法提供了一种抑制声子散射的独特方法，可以显着提高包括量子级联激光器和量子计算机在内的其他设备的性能。这里提出的新颖的处理方法应该适用于广泛的纳米器件。此外，所提出的纳米表征方法的结果将为从事纳米级光电器件研究的研究界提供有价值的信息。 将鼓励来自代表性不足和少数群体的本科生和研究生参与这项研究。在这方面，该项目将利用研究生教育联盟和西北大学的教授计划。