標題: Femtosecond Laser-Induced Formation of Wurtzite Phase ZnSe Nanoparticles in Air
作者: Wang, Hsuan I.
Tang, Wei Tsung
Liao, Li Wei
Tseng, Pei Shan
Luo, Chih Wei
Yang, Chu Shou
Kobayashi, Takayoshi
電子物理學系
Department of Electrophysics
公開日期: 2012
摘要: We demonstrate an effective method to prepare wurtzite phase ZnSe nanoparticles from zincblende ZnSe single crystal using femtosecond pulse laser ablation. The fabricated ZnSe nanoparticles are in spherical shape and uncontaminated while synthesized under ambient environment. By controlling the laser fluences, the average size of ZnSe nanoparticles can be varied from similar to 16 nm to similar to 22 nm in diameter. In Raman spectra, the surface phonon mode becomes dominant in the smaller average particle size with uniform size distribution. The interesting phase transition from the zinc blende structure of ZnSe single crystal to wurtzite structure of ZnSe nanoparticles may have been induced by the ultrahigh ablation pressure at the local area due to the sudden injection of high energy leading to solid-solid transition.
URI: http://hdl.handle.net/11536/16981
http://dx.doi.org/10.1155/2012/278364
ISSN: 1687-4110
DOI: 10.1155/2012/278364
期刊: JOURNAL OF NANOMATERIALS
顯示於類別:期刊論文


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