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Browse Journals & Magazines > Applied Physics Letters ...> Volume:98 Issue:5 Help

Improvement of UV emission from highly crystalline ZnO nanoparticles by pulsed laser ablation under O2/He glow discharge

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4 Author(s)
Ma, Qiang ; Graduate School of Science and Technology, Shizuoka University, 3-5-1 Johoku, Hamamatsu 432-8561, Japan ; Saraswati, Teguh Endah ; Ogino, Akihisa ; Nagatsu, Masaaki

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Pulsed laser ablation under an O2/He glow discharge was studied to improve the surface crystallinity and UV luminescence of ZnO nanoparticles ∼10 nm in size. X-ray photoemission spectroscopy, scanning transmission electron microscopy, and cathodoluminescence spectroscopy were used to analyze the crystalline structures and chemical components. The results indicated that highly crystalline ZnO nanoparticles were fabricated under the O2/He plasma discharge. The near band gap UV emission intensities from these particles were roughly five times those of samples fabricated under O2 gas. The present results suggest the possibility of synthesize high quality ZnO quantum dots or nanoparticles without requiring any post-treatment.

Published in:
Applied Physics Letters  (Volume:98 ,  Issue: 5 )

Date of Publication: Jan 2011

Page(s):
051908 - 051908-3
ISSN :
0003-6951
Digital Object Identifier :
10.1063/1.3551534
Product Type:
Journals & Magazines
Date of Current Version :
04 February 2011
Issue Date :
Jan 2011

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