Journal
NANO LETTERS
Volume 13, Issue 8, Pages 3947-3952Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl402117b
Keywords
Nanowire; polytype; VLS growth; TEM; defects; kinking
Categories
Funding
- NSF [DMR-1006069]
- NSF-NSEC
- NSF-MRSEC
- Keck Foundation
- State of Illinois
- Northwestern University
- UC San Diego
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1006069] Funding Source: National Science Foundation
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We propose layer-by-layer growth mechanisms to account for planar defect generation leading to kinked polytype nanowires. C-s-corrected scanning transmission electron microscopy enabled identification of stacking sequences of distinct polytype bands found in kinked nanowires, and Raman spectroscopy was used to distinguish polytype nanowires from twinned nanowires containing only the 3C diamond cubic phase. The faceting and atomic-scale defect structures of twinned 3C are compared with those of polytype nanowires to develop a common model linking nucleation pinning to nanowire morphology and phase.
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