期刊
NANO LETTERS
卷 16, 期 12, 页码 7814-7821出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.6b04006
关键词
Orientational order; silicon nanocrystals; superlattices; transformation matrix
类别
资金
- Robert A. Welch Foundation [F-1464, F-1696]
- National Science Foundation [CBET-1403768]
- NSF & NIH/NIGMS via NSF award [DMR-1332208]
- Generalitat de Catalunya [2014 SGR 1638]
- MINECO [MAT2014-59961-C2-2-R]
- Severo Ochoa Program [SEV-2013-0295]
- Directorate For Engineering
- Div Of Chem, Bioeng, Env, & Transp Sys [1403768] Funding Source: National Science Foundation
- ICREA Funding Source: Custom
Uniform silicon nanocrystals were synthesized with cuboctahedral shape and passivated with 1-dodecene capping ligands. Transmission electron microscopy, electron diffraction, and grazing incidence wide-angle and small-angle X-ray scattering show that these soft cuboctahedra assemble into face-centered cubic superlattices with orientational order. The preferred nanocrystal orientation was found to depend on the orientation of the superlattices on the substrate, indicating that the interactions with the substrate and assembly kinetics can influence the orientation of faceted nanocrystals in superlattices.
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