Spontaneous Superlattice Formation in Nanorods through PartialCation Exchange

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Lattice mismatch strains are widely known to controlnanoscale pattern formation in heteroepitaxy, but such effects have notbeen exploited in colloidal nanocrystal growth. We demonstrate acolloidal route to synthesizing CdS-Ag2S nanorod superlattices throughpartial cation exchange. Strain induces the spontaneous formation ofperiodic structures. Ab initio calculations of the interfacial energy andmodeling of strain energies show that these forces drive theself-organization. The nanorod superlattices exhibit high stabilityagainst ripening and phase mixing. These materials are tunablenear-infrared emitters with potential applications as nanometer-scaleoptoelectronic devices.

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Robinson, Richard D.; Sadtler, Bryce; Demchenko, Denis O.; Erdonmez, Can K.; Wang, Lin-Wang & Alivisatos, A. Paul March 14, 2007.

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Lattice mismatch strains are widely known to controlnanoscale pattern formation in heteroepitaxy, but such effects have notbeen exploited in colloidal nanocrystal growth. We demonstrate acolloidal route to synthesizing CdS-Ag2S nanorod superlattices throughpartial cation exchange. Strain induces the spontaneous formation ofperiodic structures. Ab initio calculations of the interfacial energy andmodeling of strain energies show that these forces drive theself-organization. The nanorod superlattices exhibit high stabilityagainst ripening and phase mixing. These materials are tunablenear-infrared emitters with potential applications as nanometer-scaleoptoelectronic devices.

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  • Journal Name: Science; Journal Volume: 317; Journal Issue: 5836; Related Information: Journal Publication Date: 07/20/2007

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  • Report No.: LBNL--62650
  • Grant Number: DE-AC02-05CH11231
  • DOI: 10.1126/science.1142593 | External Link
  • Office of Scientific & Technical Information Report Number: 929313
  • Archival Resource Key: ark:/67531/metadc896735

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Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • March 14, 2007

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  • Sept. 27, 2016, 1:39 a.m.

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  • Oct. 31, 2016, 3:58 p.m.

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Robinson, Richard D.; Sadtler, Bryce; Demchenko, Denis O.; Erdonmez, Can K.; Wang, Lin-Wang & Alivisatos, A. Paul. Spontaneous Superlattice Formation in Nanorods through PartialCation Exchange, article, March 14, 2007; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc896735/: accessed April 23, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.