Journal
NANO LETTERS
Volume 13, Issue 7, Pages 3101-3105Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl401802h
Keywords
Silicon nanorods; tin nanoparticles; solution-liquid-solid growth; thermal hydrosilylation; photoluminescence
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Funding
- Robert A. Welch Foundation [F-1464]
- Energy Frontier Research Center (EFRC)
- U.S. Department of Energy Office of Science and Office of Basic Energy Sciences [DESC0001091]
- Department of Defense through the National Defense Science & Engineering Graduate Fellowship Program
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Silicon nanorods are grown by trisilane decomposition in hot squalane in the presence of tin (Sn) nanocrystals and dodecylamine. Sn induces solutionliquidsolid nanorod growth with dodecylamine serving as a stabilizing ligand. As-prepared nanorods do not luminesce, but etching with hydrofluoric acid to remove residual surface oxide followed by thermal hydrosilylation with 1-octadecene induces bright photoluminescence with quantum yields of 45%. X-ray photoelectron spectroscopy shows that the ligands prevent surface oxidation for months when stored in air.
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