Hong Huang, Ph.D. (Advisor); Raghavan Srinivasan, Ph.D., P.E. (Committee Member); Steven Fairchild, Ph.D. (Committee Member)
Master of Science in Materials Science and Engineering (MSMSE)
Semiconducting nanoparticles have received significant attention due to their unique optoelectronic properties. Quantum dots (QDs), a class of spherical nanoparticles, possess a size-dependent bandgap and photoluminescence at visible wavelengths. QDs have many applications including biological labelling, solar cells, chemical impurity detection, and optical glasses. Doping QDs into optical glasses is highly desirable. High-quality QDs can be synthesized via liquid solution methods. However, solution-synthesized QDs often degrade over time and they cannot survive incorporation into a glass melt without protection. In this work, the aqueous synthesis of ZnSe QDs and coating with nanometer silica and alumina protective shells are investigated. The effects of synthesis conditions on the structure and coating quality of ZnSe nanocrystals are systematically assessed via X-Ray Diffraction, Electron Microscopy, and UV-Vis Spectroscopy. Results indicate the successful fabrication of ZnSe nanocrystals and deposition of both silica and alumina shells.
Department or Program
Department of Mechanical and Materials Engineering
Year Degree Awarded
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