An Aerosal Process for Fabrication of Monosized GaAs QuantumCluster Dots

量子团簇点是一种紧凑的结构，尺寸在5到20微米之间，其中三维的小尺度产生离散的电子状态。本研究是一个跨学科的实验项目，旨在研究单分散砷化镓（ga）量子簇点的形成和表征。这些团簇将在气溶胶反应器中通过有机金属镓与砷的气相反应产生。利用原位激光诱导发光光谱监测颗粒大小和团簇质量。来自气溶胶反应器的簇将被分类为静电分类器应用所需的非常狭窄的尺寸范围。捕获的粒子将使用电子显微镜（TEM和STEM）、能量色散x射线分析（EDAX）、和电子能量损失谱（EELS）。将大量相同的量子团簇点结合到固态结构中，将产生令人兴奋的新型电子和光学元件。可能的应用包括比传统二极管激光器好几个数量级的半导体激光器和便于调整颜色的新型电致发光显示技术。然而，为了达到这样的效果，必须生产出非常严格的尺寸公差，通常尺寸变化不大于0.5 um。否则，一个平均许多大小不同的团簇的电子状态的装置将失去任何单个量子团簇点固有的状态的独特性。

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.