Synthesis of designed W-WSe2 heterostructures from superlattice reactants

Susan Moss, Myungkeun Noh, K. H. Jeong, D. H. Kim, David C. Johnson

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Abstract

A nanocomposite consisting of alternating, orientated, crystalline layers of tungsten and tungsten diselenide was prepared using a designed elemental superlattice as the initial reactant. In binary tungsten-selenium multilayers, tungsten diselenide was observed to interfacially nucleate upon deposition and grow preferentially along the interface. This information was used to design a multilayer reactant containing a thick tungsten layer in addition to thin tungsten and selenium layers in the repeating unit. The evolution of the structure of the superlattice reactant as a function of annealing temperature was followed using both low- and high-angle diffraction. The diffraction data confirmed the formation of a superlattice or nanostructured composite consisting of alternating layers of tungsten and tungsten diselenide containing crystallites limited in c-axis domain size by the layer repeat.

Original languageEnglish
Pages (from-to)1853-1857
Number of pages5
JournalChemistry of Materials
Volume8
Issue number8
DOIs
Publication statusPublished - 1996 Dec 1

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All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Chemistry

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