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Importance of diameter control on selective synthesis of semiconducting single-walled carbon nanotubes.

Publication ,  Journal Article
Li, J; Ke, C-T; Liu, K; Li, P; Liang, S; Finkelstein, G; Wang, F; Liu, J
Published in: ACS nano
August 2014

The coexistence of semiconducting and metallic single-walled carbon nanotubes (SWNTs) during synthesis is one of the major bottlenecks that prevent their broad application for the next-generation nanoelectronics. Herein, we present more understanding and demonstration of the growth of highly enriched semiconducting SWNTs (s-SWNTs) with a narrow diameter distribution. An important fact discovered in our experiments is that the selective elimination of metallic SWNTs (m-SWNTs) from the mixed arrays grown on quartz is diameter-dependent. Our method emphasizes controlling the diameter distribution of SWNTs in a narrow range where m-SWNTs can be effectively and selectively etched during growth. In order to achieve narrow diameter distribution, uniform and stable Fe-W nanoclusters were used as the catalyst precursors. About 90% of as-prepared SWNTs fall into the diameter range 2.0-3.2 nm. Electrical measurement results on individual SWNTs confirm that the selectivity of s-SWNTs is ∼95%. The present study provides an effective strategy for increasing the purity of s-SWNTs via controlling the diameter distribution of SWNTs and adjusting the etchant concentration. Furthermore, by carefully comparing the chirality distributions of Fe-W-catalyzed and Fe-catalyzed SWNTs under different water vapor concentrations, the relationship between the diameter-dependent and electronic-type-dependent etching mechanisms was investigated.

Duke Scholars

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Published In

ACS nano

DOI

EISSN

1936-086X

ISSN

1936-0851

Publication Date

August 2014

Volume

8

Issue

8

Start / End Page

8564 / 8572

Related Subject Headings

  • Nanoscience & Nanotechnology
 

Citation

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Li, J., Ke, C.-T., Liu, K., Li, P., Liang, S., Finkelstein, G., … Liu, J. (2014). Importance of diameter control on selective synthesis of semiconducting single-walled carbon nanotubes. ACS Nano, 8(8), 8564–8572. https://doi.org/10.1021/nn503265g
Li, Jinghua, Chung-Ting Ke, Kaihui Liu, Pan Li, Sihang Liang, Gleb Finkelstein, Feng Wang, and Jie Liu. “Importance of diameter control on selective synthesis of semiconducting single-walled carbon nanotubes.ACS Nano 8, no. 8 (August 2014): 8564–72. https://doi.org/10.1021/nn503265g.
Li J, Ke C-T, Liu K, Li P, Liang S, Finkelstein G, et al. Importance of diameter control on selective synthesis of semiconducting single-walled carbon nanotubes. ACS nano. 2014 Aug;8(8):8564–72.
Li, Jinghua, et al. “Importance of diameter control on selective synthesis of semiconducting single-walled carbon nanotubes.ACS Nano, vol. 8, no. 8, Aug. 2014, pp. 8564–72. Epmc, doi:10.1021/nn503265g.
Li J, Ke C-T, Liu K, Li P, Liang S, Finkelstein G, Wang F, Liu J. Importance of diameter control on selective synthesis of semiconducting single-walled carbon nanotubes. ACS nano. 2014 Aug;8(8):8564–8572.
Journal cover image

Published In

ACS nano

DOI

EISSN

1936-086X

ISSN

1936-0851

Publication Date

August 2014

Volume

8

Issue

8

Start / End Page

8564 / 8572

Related Subject Headings

  • Nanoscience & Nanotechnology