An Aerosal Process for Fabrication of Monosized GaAs QuantumCluster Dots

制造单尺寸砷化镓量子簇点的气雾工艺

• 批准号: 8912328
• 负责人: Richard Flagan
• 金额: $ 44.84万
• 依托单位: California Institute of Technology
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-10-01 至 1992-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8912328&HistoricalAwards=false
• 关键词: Aerosal; Process; Fabrication; Monosized; GaAs

A quantum cluster dot is a compact structure in the 5 to 20 um size range where small scale in three dimensions yields discrete electronic states. This research is an interdisplinary, experimental program for the formation and characterization of monodisperse gallium arsenide (G A ) quantum cluster dots. The clusters will be produced in an aerosol reactor by the vapor phase reaction of an organometallic gallium contains vapor with arsine. Particle size and cluster quality will be monitored by in-situ laser induced luminescence spectra. Clusters from the aerosol reactor will be classified into very narrow size ranges required for applications by an electrostatic classifier. Captured particles will be analyzed as to particle morphology, interval defect structure, and carbon contamination using electron microscopy (TEM and STEM), energy dispersive X-ray analysis (EDAX), and electron energy loss spectroscopy (EELS). Exciting new electronic and optical components would result from the incorporation of large numbers of identical quantum cluster dots into solid state structures. Possible applications include semiconductor lasers several orders of magnitude better than conventional diode lasers and new electroluminescent display technology with convenient adjustment of color. However, to achieve such results, the clusters must be produced to very strict size tolerances, typically with size variations not larger than 0.5 um. Otherwise a device averaging the electronic states of many clusters varying in size would lose the distinctness of states inherent in any individual quantum cluster dot.

量子簇点是5至20 um尺寸范围内的紧凑结构，其中三个维度的小规模可产生离散的电子状态。 这项研究是用于形成和表征单分散铝（G a）量子簇点的跨性实验程序。 簇将通过有机金属凝胶的蒸气相反应在气溶胶反应堆中产生，其中含有杏仁酸的蒸气。 粒度和簇质量将通过原位激光诱导的发光光谱监测。 来自气溶胶反应器的簇将分为静电分类器所需的非常狭窄的尺寸范围。 将对使用电子显微镜（TEM和STEM），能量色散X射线分析（EDAX）和电子能量损耗光谱（EELS）（EELS）的颗粒形态，间隔缺陷结构和碳污染分析捕获的颗粒。 令人兴奋的新电子和光学组件将是由于将大量相同的量子簇点掺入固态结构中而产生的。 可能的应用程序包括半导体激光器比传统二极管激光器好几个数量级，以及具有方便的颜色调整的新电动发光显示技术。 但是，为了达到这样的结果，必须将簇产生至非常严格的尺寸公差，通常尺寸变化不大于0.5 um。 否则，平均许多群集的电子状态的设备将失去任何单个量子群集点固有的状态的独特性。