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J Am Chem Soc. 2005 Feb 2;127(4):1318-22.

Vapor-solid growth and characterization of aluminum nitride nanocones.

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  • 1Key Laboratory of Mesoscopic Chemistry of MOE, Department of Chemistry, Nanjing University, Nanjing 210093, China.

Abstract

Aluminum nitride nanostructures are attractive for many promising applications in semiconductor nanotechnology. Herein we report on vapor-solid growth of quasi-aligned aluminum nitride nanocones on catalyst-coated wafers via the reactions between AlCl3 vapor and NH3 gas under moderate temperatures around 700 degrees C, and the growth mechanism is briefly discussed. The as-prepared wurtzite aluminum nitride nanocones grow preferentially along the c-axis with adjustable dimensions of the sharp tips in the range of 20-60 nm. The photoluminescence spectrum reveals a broad blue emission band with a fine photon structure while the field emission study shows a notable emission current with a moderate turn-on field as expected, suggesting their potential applications in light and electron emission nanodevices.

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