title: Sub-10 nm monodisperse PbS cubes by post-synthesis shape engineering.
abstract: Sub-10 nm monodisperse PbS cubes are synthesized by reacting quasi-spherical PbS nanocrystals with (NH4)2S. This reaction shapes the quasi-spheres into cubes via preferential growth of the (111) facets. A four-band envelope function calculation of the energy levels accounts well for the measured absorption spectra. Initial studies show that PbS cubes can organize into simple square superlattices with short ligands.
authors.affiliation: School of Applied and Engineering Physics, Cornell University, Ithaca, NY 14853, USA. hz244@cornell.edu.
authors.forename: Haitao
authors.initials: H
authors.lastname: Zhang
authors.forename: Jun
authors.initials: J
authors.lastname: Yang
authors.forename: Tobias
authors.initials: T
authors.lastname: Hanrath
authors.forename: Frank W
authors.initials: FW
authors.lastname: Wise