Orientationally Ordered Silicon Nanocrystal Cuboctahedra in Superlattices
详细信息 查看全文
- 作者：Yixuan Yu ; Xiaotang Lu ; Adrien Guillaussier ; Vikas Reddy Voggu ; William Pineros ; Maria de la Mata ; Jordi Arbiol ; Detlef-M. Smilgies ; Thomas M. Truskett ; Brian A. Korgel
- 刊名：Nano Letters
- 出版年：2016
- 出版时间：December 14, 2016
- 年：2016
- 卷：16
- 期：12
- 页码：7814-7821
- 全文大小：732K
- ISSN：1530-6992
文摘
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.