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Probing Field Emission from Boron Carbide Nanowires |
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| Authors: | TIAN Ji-Fa BAO Li-Hong WANG Xing-Jun HUI Chao LIU Fei LI Chen SHEN Cheng-Min WANG Zong-Li GU Chang-Zhi GAO Hong-Jun |
| Affiliation: | Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190Laboratory for State Key Laboratory of Optoelectronic Materials and Technologies, School of Physics and Engineering, Sun Yat-sen University, Guangzhou 510275 |
| Abstract: | High density boron carbide nanowires are grown by an improved carbon thermal reduction technique. Transmission electron microscopy and electron energy lose spectroscopy of the sample show that the synthesized nanowires are B4C with good crystallization. The field emission measurement for an individual boron nanowire is performed by using a Pt tip installed in the focused ion beam system. A field emission current with enhancement factor of 106 is observed and the evolution process during emission is also carefully studied. Furthermore, a two-step field emission with stable emission current density is found from the high-density nanowire film. Our results together suggest that boron carbide nanowires are promising candidates for electron emission nanodevices. |
| Keywords: | 81 07 -b 73 63 -b |
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