Building up Mesoscopic Superlattice of PbS Nanocrystals via Oriented Attachment

摘要

One of the most intriguing features of colloidal nanocrystals besides their electronic quantumconfinement properties is their capability to self-assembly to form superstructures. Therefore,there are strong interests for both physicists and chemists to build a new material system fromthese quasi-atom-like nanocrystals in form of superlattices possessing emerging bandstructures. Nevertheless, to achieve the intended kinds of superlattices requires precise controlof the nanocrystals interactions and their surface conditions during self-assembly process.