Templated growth of nanostructured semiconductor materials
MetadataShow full item record
Multi-layer nanostructures of III-V semiconductors that confine electrons and holes in two dimensions have revolutionized the field of optoelectronics over the past 35 years. More recently, "zero-dimensional structures" (quantum dots) and "one-dimensional structures" (quantum wires) of II-VI compounds, have been attracting a lot of attention, because of their size-dependent luminescence. Potential applications of these interesting materials include biological tagging, optical barcodes, high-density electronics based on manipulation of electron spin (spintronics), and highly-efficient solar cells and electrically driven lasers. My research is focusing on the development of techniques for template growth and post processing of II-VI quantum dots, rods, as well as other nanostructures, such as nanotubes, nanohollow spheres and nanolayers. The focus is on the development of materials that can form the active centers of new high-density optoelectronic devices and medical diagnostic devices. The material of interest is ZnSe. The nanostructured templates are formed by microemulsions and liquid crystals that are stabilized using amphiphilic polymers. The main goal of post processing is to make the synthesized particles water-soluble. The water-soluble particles have applications in biomedical engineering as luminescent tags for biomolecules that enable highly sensitive and selective clinical diagnostics. The particles are being characterized with a variety of techniques, including optical spectroscopy (Raman, photoluminescence and absorption), transmission electron microscopy (TEM) and several application-specific characterization tools that assess their efficiency and potential application.