Sensors: Synthesis of Active Quantum Dot Infra-Red (IR) Sensors

传感器：活性量子点红外 (IR) 传感器的合成

• 批准号: 0529085
• 负责人: Don Lucca
• 金额: --
• 依托单位: Oklahoma State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-10-01 至 2011-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0529085&HistoricalAwards=false
• 关键词: Sensors; Synthesis; Active; Quantum; Dot

The objective of this Sensors and Sensor Networks (NSF 05-526) research is to acquire an understanding of the effects of mechanical strain on the infrared absorption of semiconductor nanocrystals which exhibit quantum confinement, referred to as quantum dots, thereby enabling their potential use as active infrared sensors. The approach will be to synthesize by ion implantation a range of semiconductor quantum dots implanted into infrared transparent substrates. Spectral response will be tailored by varying the quantum dot size. Resulting size, structure, distribution and chemistry will be quantified by Rutherford backscattering spectrometry, high resolution transmission electron microscopy and photoluminescence spectroscopy. Fine-tuning about a particular spectral peak will then be performed by the application of strain accomplished by piezoactuator loading. If successful the benefits of this research will be a new class of advanced infrared sensors with dramatically improved performance in multispectral and high sensitivity applications, including remote temperature sensing, trace gas sensing of chemical and biological species, military target discrimination and identification, and ground-based astronomy. The ability to actively tune the absorption spectra of quantum dots could lead to compact infrared sensors with lower cost, higher sensitivity and the ability to operate at room temperature. Additionally this work will contribute to an enhancement of infrastructure for research and education by the strong collaboration which reaches across both institutional and interdisciplinary bounds. Interaction with the scientists and engineers from the participating government laboratory will broaden the scientific experience of our graduate and undergraduate students involved with the project, and will promote understanding and awareness of interdisciplinary scientific collaboration.

这项传感器和传感器网络 (NSF 05-526) 研究的目的是了解机械应变对具有量子限制（称为量子点）的半导体纳米晶体的红外吸收的影响，从而使其具有潜在的用途主动红外传感器。 该方法将通过离子注入合成一系列注入红外透明基板的半导体量子点。 光谱响应将通过改变量子点尺寸来定制。 由此产生的尺寸、结构、分布和化学性质将通过卢瑟福背散射光谱法、高分辨率透射电子显微镜和光致发光光谱法进行量化。 然后，通过施加由压电致动器负载实现的应变，对特定光谱峰值进行微调。如果成功，这项研究的好处将是新型先进红外传感器，其在多光谱和高灵敏度应用中的性能显着提高，包括远程温度传感、化学和生物物种的痕量气体传感、军事目标辨​​别和识别以及地面探测。以天文学为基础。 主动调节量子点吸收光谱的能力可以带来成本更低、灵敏度更高且能够在室温下工作的紧凑型红外传感器。 此外，这项工作将通过跨越机构和跨学科界限的强有力合作，有助于加强研究和教育基础设施。 与参与政府实验室的科学家和工程师的互动将拓宽参与该项目的研究生和本科生的科学经验，并将促进对跨学科科学合作的理解和意识。