Chinese Optics Letters, 2007, 5 (3): 184, Published Online: Mar. 12, 2007  

Ultrafast blue light emission from SiC nanowires Download: 541次

Author Affiliations
State Key Laboratory of Optoelectronic Materials and Technologies, Sun Yat-Sen University, Guangzhou 510275
Abstract
Cubic silicon carbide (SiC) nanowires are synthesized in a catalyst-assisted process. The nanowires with diameter of ~40 nm exhibit strong blue light emission at room temperature under ultraviolet (UV) femtosecond laser excitation. The photon energy of peak emission is higher than the energy bandgap of cubic SiC which shows involvement of quantum conf inement ef fect. The ultrafast f luorescence is deconvoluted by Monte-Carlo method. The results show two ultrafast decay processes whose lifetimes are about 26 and 567 ps respectively. The mechanisms of such ultrafast processes are discussed.

Fuli Zhao, Hongxin Chen, Shaozhi Deng, Ningsheng Xu, Tianqing Jia, Zhizhan Xu. Ultrafast blue light emission from SiC nanowires[J]. Chinese Optics Letters, 2007, 5(3): 184.

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