Formation and photoluminescence properties of boron nanocones

doi:10.1088/1674-1056/17/10/048

Abstract

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/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.

Keywords: boron nanocones chemical vapour deposition photoluminescence

Received: 22 February 2008
Revised: 11 April 2008
Accepted manuscript online:

PACS:	81.16.-c	(Methods of micro- and nanofabrication and processing)
	81.15.Gh	(Chemical vapor deposition (including plasma-enhanced CVD, MOCVD, ALD, etc.))
	61.46.Hk	(Nanocrystals)
	78.67.Bf	(Nanocrystals, nanoparticles, and nanoclusters)
	78.55.Hx	(Other solid inorganic materials)
	81.07.Bc	(Nanocrystalline materials)

Fund: Project 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.

Cite this article:

Wang Xing-Jun(王兴军), Tian Ji-Fa(田继发), Bao Li-Hong(鲍丽宏), Yang Tian-Zhong(杨天中), Hui Chao(惠超), Liu Fei(刘飞), Shen Cheng-Min(申承民), Xu Ning-Sheng(许宁生), and Gao Hong-Jun(高鸿钧) Formation and photoluminescence properties of boron nanocones 2008 Chin. Phys. B 17 3827

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