PbS nanocrystal \”plasma-polymerization\”
Authors: Cademartiri L., Von Freymann G., Arsenault A.C., Bertolotti J., Wiersma D.S., Kitaev V., Ozin G.A.
Autors Affiliation: Materials Chemistry Research Group, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ont. M5S 3H6, Canada; European Laboratory for Non-linear Spectroscopy (LENS), INFM-Matis, Polo Scientifico, Via Nello Carrara 1, 50019 Sesto-Fiorentino (Florence), Italy; Chemistry Department, Wilfrid Laurier University, 75 University Ave W, Waterloo, Ont. N2L 3C5, Canada; Institut für Angewandte Physik, Universität Karlsruhe (TH), 76128 Karlsruhe, Germany
Abstract: We here demonstrate the use of semiconductor chalcogenide nanocrystals as single-source precursors for the one-step formation of flexible functional films. By taking advantage of the surface chemistry of these \”zero-dimensional\” building blocks we obtain close-packed three-dimensional arrays of nanocrystals interconnected by oxide sheaths. The films are obtained by exposing oxidation-resistant nanocrystals to an air plasma treatment. This treatment does not significantly influence the photoluminescence efficiency of the individual nanocrystal building blocks but confers them resilience to bending as well as resistance to acidic environments, hot solvents, annealing, and UV irradiation.
KeyWords: Annealing; Chalcogenides; Lead compounds; Photoluminescence; Plasma polymerization; Surface chemistry; Ultraviolet radiation, Building blocks; Hot solvents; Oxide sheaths, NanocrystalsDOI: 10000000000