Long-range orientation and atomic attachment of nanocrystals in 2D honeycomb superlattices

M. P. Boneschanscher, W. H. Evers, J. J. Geuchies, T. Altantzis, B. Goris, F. T. Rabouw, S. A.P. van Rossum, H. S.J. van der Zant, L. D.A. Siebbeles, G. van Tendeloo, I. Swart, J. Hilhorst, A. V. Petukhov, S. Bals, D. Vanmaekelbergh (Corresponding author)

Research output: Contribution to journalArticleAcademicpeer-review

237 Citations (Scopus)

Abstract

Oriented attachment of synthetic semiconductor nanocrystals is emerging as a route for obtaining new semiconductors that can have Dirac-type electronic bands such as graphene, but also strong spin-orbit coupling. The two-dimensional (2D) assembly geometry will require both atomic coherence and long-range periodicity of the superlattices. We show how the interfacial self-assembly and oriented attachment of nanocrystals results in 2D metal chalcogenide semiconductors with a honeycomb superlattice. We present an extensive atomic and nanoscale characterization of these systems using direct imaging and wave scattering methods. The honeycomb superlattices are atomically coherent and have an octahedral symmetry that is buckled; the nanocrystals occupy two parallel planes. Considerable necking and large-scale atomic motion occurred during the attachment process.

Original languageEnglish
Pages (from-to)1377-1380
Number of pages5
JournalScience
Volume344
Issue number6190
DOIs
Publication statusPublished - 1 Jan 2014
Externally publishedYes

Fingerprint Dive into the research topics of 'Long-range orientation and atomic attachment of nanocrystals in 2D honeycomb superlattices'. Together they form a unique fingerprint.

Cite this