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Author Evers, W.H.; Goris, B.; Bals, S.; Casavola, M.; de Graaf, J.; van Roij, R.; Dijkstra, M.; Vanmaekelbergh, D.
Title Low-dimensional semiconductor superlattices formed by geometric control over nanocrystal attachment Type A1 Journal article
Year (down) 2013 Publication Nano letters Abbreviated Journal Nano Lett
Volume 13 Issue 6 Pages 2317-2323
Keywords A1 Journal article; Engineering sciences. Technology; Electron microscopy for materials research (EMAT)
Abstract Oriented attachment, the process in which nanometer-sized crystals fuse by atomic bonding of specific crystal facets, is expected to be more difficult to control than nanocrystal self-assembly that is driven by entropic factors or weak van der Waals attractions. Here, we present a study of oriented attachment of PbSe nanocrystals that counteract this tuition. The reaction was studied in a thin film of the suspension casted on an immiscible liquid at a given temperature. We report that attachment can be controlled such that it occurs with one type of facets exclusively. By control of the temperature and particle concentration we obtain one- or two-dimensional PbSe single crystals, the latter with a honeycomb or square superimposed periodicity in the nanometer range. We demonstrate the ability to convert these PbSe superstructures into other semiconductor compounds with the preservation of crystallinity and geometry.
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Corporate Author Thesis
Publisher Place of Publication Washington Editor
Language Wos 000320485100001 Publication Date 2012-10-11
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1530-6984;1530-6992; ISBN Additional Links UA library record; WoS full record; WoS citing articles
Impact Factor 12.712 Times cited 206 Open Access
Notes 262348 ESMI; Hercules 3 Approved Most recent IF: 12.712; 2013 IF: 12.940
Call Number UA @ lucian @ c:irua:101777 Serial 1847
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