Journal
ACS NANO
Volume 3, Issue 12, Pages 4023-4032Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nn901222t
Keywords
bimetallic; nanoparticle; carbon nanotube; chirality
Categories
Funding
- ACS Petroleum Research Fund
Ask authors/readers for more resources
The inhomogeneity of as-grown single-walled carbon nanotubes (SWCNTs), in terms of chiral structure, is a major obstacle to integration of these novel materials in advanced electronics. While separation methods have circumvented this problem, current synthesis approaches must be refined for large-scale production of SWCNTs with uniform properties. In addition, it is highly desirable to alter the initial chirality distribution which constrains fundamental study and applications. Here, we demonstrate that semiconducting SWCNTs are selectively produced in the gas phase by engineering catalysts at the nanoscale with precise size and composition, The semiconducting content in as-grown mixtures of SWCNTs is assessed by UV-visible-NIR absorbance and micro-Raman spectroscopy and reaches a maximum purity of 90% for samples catalyzed by Ni0.27Fe0.73 nanoparticles (2.0 mm mean diameter), Electrical studies are performed on thin film transistors (TFTs) fabricated from as-grown SW(NTs and reveal high on/off current ratios of 10(3).
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available