QUANTUM DOTS HAVING A NANOCRYSTALLINE CORE, A NANOCRYSTALLINE SHELL SURROUNDING THE CORE, AND AN INSULATOR COATING FOR THE SHELL

摘要

Semiconductor structures having insulators coatings and methods of fabricating semiconductor structures having insulators coatings are described. In an example, a method of coating a semiconductor structure involves adding a silicon-containing silica precursor species to a solution of nanocrystals. The method also involves, subsequently, forming a silica-based insulator layer on the nanocrystals from a reaction involving the silicon-containing silica precursor species. The method also involves adding additional amounts of the silicon-containing silica precursor species after initial forming of the silica-based insulator layer while continuing to form the silica-based insulator layer to finally encapsulate each of the nanocrystals.