ZnO Synthesis in Controlled Atmosphere by Gas Injection

This project focuses on the controlled synthesis of Zinc Oxide (ZnO) nanoparticles with superior optoelectronic properties, emphasizing precise control over morphology, size, and crystalline purity. The problem addressed is the need for high-quality nanostructured ZnO for applications in photonics, UV emission devices, and gas sensors, aiming to surpass limitations found in materials like GaN. The solution involves a vapor-phase synthesis process utilizing simple Zinc (Zn) evaporation followed by direct oxidation within a quartz tubular reactor under a controlled atmosphere (Argon and Air injection). A reactor capable of operating between 850º and 1100º C was designed and assembled, controlling thermodynamic and kinetic parameters. The methodology includes zone collection of particles, followed by comprehensive characterization: Scanning Electron Microscopy (SEM) for morphology and size, Photoluminescence (PL) and Cathodoluminescence (CL) for photoelectric properties, and Transmission Electron Microscopy (TEM) for internal microstructure. The ultimate goal is to establish optimal parameters to ensure the reproducibility of the ideal material, suitable for manufacturing light-emitting devices and sensors, culminating in the publication of scientific findings.<br/><br/><b>Goal</b>: <br/>To synthesize highly luminescent Zinc Oxide (ZnO) nanoparticles, controlling their morphology and size while maintaining high purity and crystalline quality, through a simple evaporation and direct oxidation process of Zn in an inert and controlled atmosphere.<br/><br/><b>Research lines</b>: <br/>Telematics