Fabrication and field emission properties of boron nanowire bundles

We have successfully synthesized large-scale crystalline boron nanowire bundles (BNBs) by chemical vapor deposition method. Fe 3O 4 nanoparticles were used as catalysts spreading on ceramic substrate during the reaction process. The bundles consisted of many thin boron nanowires with a mean diameter...

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Bibliographic Details
Published in:Ultramicroscopy 2009-04, Vol.109 (5), p.447-450
Main Authors: Liu, Fei, Liang, W.J., Su, Z.J., Xia, J.X., Deng, S.Z., Chen, J., She, J.C., Xu, N.S., Tian, J.F., Shen, C.M., Gao, H.-J.
Format: Article
Language:English
Subjects:
BNBs
Chemical vapor deposition
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Summary:We have successfully synthesized large-scale crystalline boron nanowire bundles (BNBs) by chemical vapor deposition method. Fe 3O 4 nanoparticles were used as catalysts spreading on ceramic substrate during the reaction process. The bundles consisted of many thin boron nanowires with a mean diameter of about 25 nm and a length of several micrometers. In addition, boron nanowires are single crystals with an α-tetragonal structure and grow along [0 0 1] orientation. These nanowires have a surface electron affinity of 3.76 eV and a work function of 4.54 eV. A turn-on field of 5.1 V/μm and a threshold field of 10.5 V/μm were found in the nanowire bundles, and stable field emission was recorded at the same time.
ISSN:0304-3991
1879-2723
DOI:10.1016/j.ultramic.2008.12.010