Formation and photoluminescence properties of boron nanocones |
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Authors: | Wang Xing-Jun Tian Ji-F Bao Li-Hong Yang Tian-Zhong Hui Chao Liu Fei Shen Cheng-Min Xu Ning-Sheng and Gao Hong-Jun |
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Institution: | Beijing National Laboratory for Condensed Matter
Physics,
Institute of Physics,
Chinese Academy of Sciences, Beijing 100190, China; State Key Laboratory of Optoelectronic Materials and
Technologies, School of Physics and Engineering,
Sun Yat-sen
University, Guangzhou 510275, China |
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Abstract: | This paper reports that a simple chemical vapour deposition method
has been adopted to fabricate large scale, high density boron
nanocones with thermal evaporation of B/Bboron nanocones, chemical vapour
deposition, photoluminescenceProject supported in part by the
National 863 (Grant No 2007AA03Z305) and 973 (Grant No 2007CB935503)
Projects, the National Science Foundation of China (Grant Nos
U0734003 and 60571045), and China
Postdoctoral Science Foundation.6140M, 8115H, 7855CThis paper reports that a simple chemical vapour deposition method
has been adopted to fabricate large scale, high density boron
nanocones with thermal evaporation of B/Bboron nanocones, chemical vapour
deposition, photoluminescenceProject supported in part by the
National 863 (Grant No 2007AA03Z305) and 973 (Grant No 2007CB935503)
Projects, the National Science Foundation of China (Grant Nos
U0734003 and 60571045), and China
Postdoctoral Science Foundation.6140M, 8115H, 7855CThis paper reports that a simple chemical vapour deposition method
has been adopted to fabricate large scale, high density boron
nanocones with thermal evaporation of B/Bboron nanocones, chemical vapour
deposition, photoluminescenceProject supported in part by the
National 863 (Grant No 2007AA03Z305) and 973 (Grant No 2007CB935503)
Projects, the National Science Foundation of China (Grant Nos
U0734003 and 60571045), and China
Postdoctoral Science Foundation.6140M, 8115H, 7855CThis paper reports that a simple chemical vapour deposition method
has been adopted to fabricate large scale, high density boron
nanocones with thermal evaporation of B/B$_{2}$O$_{3}$ powders
precursors in an Ar/H$_{2}$ gas mixture at the synthesis temperature
of 1000--1200$^{\circ}$C. The lengths of boron nanocones are several
micrometres, and the diameters of nanocone tops are in a range of
50--100\,nm. transmission electron microscopy and selected area
electron diffraction indicate that the nanocones are single
crystalline $\alpha $-tetragonal boron. The vapour--liquid--solid
mechanism is the main formation mechanism of boron nanocones. One
broad photoluminescence emission peak at the central wavelength of
about 650 nm is observed under the 532 nm light excitation. Boron
nanocones with good photoluminescence properties are promising
candidates for applications in optical emitting devices. |
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Keywords: | boron nanocones chemical vapour
deposition photoluminescence |
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