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Published on: June 18, 2013
Aligned ultra-long single-crystalline α-Si(3)N(4) nanowires
Fengmei Gao1, Weiyou Yang, Yi Fan
1Laboratory of Excited State Process, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, People's Republic of China. The Graduate School of Chinese Academy of Sciences, Changchun 130033, People's Republic of China. Institute of Materials, Ningbo University of Technology, Ningbo 315016, People's Republic of China.
Abstract:
We report the synthesis of aligned ultra-long single-crystalline α-Si(3)N(4) nanowires by pyrolysis of a polymeric precursor without any template. The length of the wires is up to several centimeters, which is significantly longer than that of any Si(3)N(4) wires reported previously. Microscopy characterization reveals that the wires are single crystals, with a uniform diameter of ∼200 nm. Intense visible photoluminescence was observed between 1.3 and 3.7 eV. The wires could be useful in the fabrication of optoelectronic nanodevices and nanocomposites.
