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Title: Spontaneous Superlattice Formation in Nanorods through PartialCation Exchange

Abstract

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.

Authors:
; ; ; ; ;
Publication Date:
Research Org.:
Ernest Orlando Lawrence Berkeley NationalLaboratory, Berkeley, CA (US)
Sponsoring Org.:
USDOE Director. Office of Science. Basic EnergySciences
OSTI Identifier:
929313
Report Number(s):
LBNL-62650
Journal ID: ISSN 0193-4511; SCEHDK; R&D Project: 508401; BnR: KC0203010; TRN: US200813%%183
DOE Contract Number:
DE-AC02-05CH11231
Resource Type:
Journal Article
Resource Relation:
Journal Name: Science; Journal Volume: 317; Journal Issue: 5836; Related Information: Journal Publication Date: 07/20/2007
Country of Publication:
United States
Language:
English
Subject:
36; 37; 75; CATIONS; RIPENING; SIMULATION; STABILITY; STRAINS; SUPERLATTICES; cation exchange nanorod superlattice strain-mediated growthnanocrystals colloidal

Citation Formats

Robinson, Richard D., Sadtler, Bryce, Demchenko, Denis O., Erdonmez, Can K., Wang, Lin-Wang, and Alivisatos, A. Paul. Spontaneous Superlattice Formation in Nanorods through PartialCation Exchange. United States: N. p., 2007. Web. doi:10.1126/science.1142593.
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. United States. doi:10.1126/science.1142593.
Robinson, Richard D., Sadtler, Bryce, Demchenko, Denis O., Erdonmez, Can K., Wang, Lin-Wang, and Alivisatos, A. Paul. Wed . "Spontaneous Superlattice Formation in Nanorods through PartialCation Exchange". United States. doi:10.1126/science.1142593. https://www.osti.gov/servlets/purl/929313.
@article{osti_929313,
title = {Spontaneous Superlattice Formation in Nanorods through PartialCation Exchange},
author = {Robinson, Richard D. and Sadtler, Bryce and Demchenko, Denis O. and Erdonmez, Can K. and Wang, Lin-Wang and Alivisatos, A. Paul},
abstractNote = {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.},
doi = {10.1126/science.1142593},
journal = {Science},
number = 5836,
volume = 317,
place = {United States},
year = {Wed Mar 14 00:00:00 EDT 2007},
month = {Wed Mar 14 00:00:00 EDT 2007}
}