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PbS Nanocrystal “Plasma-Polymerization”

  • Ludovico Cademartiri (a1), Georg von Freymann (a2), Andre C. Arsenault (a3), Jacopo Bertolotti (a4), Diederik S. Wiersma (a5), Vladimir Kitaev (a6) and Geoffrey A. Ozin (a7)...

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.

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