Femtosecond laser-induced formation of wurtzite phase ZnSe nanoparticles in air

Hsuan I. Wang, Wei Tsung Tang, Li Wei Liao, Pei Shan Tseng, Chih-Wei Luo*, Chu Shou Yang, Takayoshi Kobayashi

*Corresponding author for this work

Research output: Contribution to journalArticle

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Abstract

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 16 nm 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.

Original languageEnglish
Article number278364
JournalJournal of Nanomaterials
Volume2012
DOIs
StatePublished - 18 Sep 2012

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    Wang, H. I., Tang, W. T., Liao, L. W., Tseng, P. S., Luo, C-W., Yang, C. S., & Kobayashi, T. (2012). Femtosecond laser-induced formation of wurtzite phase ZnSe nanoparticles in air. Journal of Nanomaterials, 2012, [278364]. https://doi.org/10.1155/2012/278364