Synthesis of Tunable SnS-TaS2 Nanoscale Superlattices

Dennice Roberts, Dylan Bardgett, Brian Gorman, John Perkins, Andriy Zakutayev, Sage Bauers

Research output: Contribution to journalArticlepeer-review

7 Scopus Citations


Nanoscale superlattices represent a compelling platform for designed materials as the specific identity and spatial arrangement of constituent layers can lead to tunable properties. A number of kinetically stabilized, nonepitaxial superlattices with almost limitless structural tunability have been reported in telluride and selenide chemistries but have not yet been extended to sulfides. Here, we present SnS-TaS2 nanoscale superlattices with tunable layer architecture. Layered amorphous precursors are prepared as thin films programmed to mimic the targeted superlattice; subsequent low temperature annealing activates self-assembly into crystalline nanocomposites. We investigate structure and composition of superlattices comprised of monolayers of TaS2 and 3-7 monolayers of SnS per repeating unit. Furthermore, a graded precursor preparation approach is introduced, allowing stabilization of superlattices with multiple stacking sequences in a single preparation. Controlled synthesis of the architecture of nanoscale superlattices is a critical path toward tuning their exotic properties and enabling integration with electronic, optical, or quantum devices.

Original languageAmerican English
Pages (from-to)7059-7067
Number of pages9
JournalNano Letters
Issue number10
StatePublished - 14 Oct 2020

Bibliographical note

Publisher Copyright:
Copyright © 2020 American Chemical Society.

NREL Publication Number

  • NREL/JA-5900-76763


  • 2D transition-metal dichalcogenides
  • heterostructure
  • self-assembly


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