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Proceedings Paper

Synthesis of Sb-doped ZnO microspheres by pulsed laser ablation and their photoluminescence properties
Author(s): T. Tanaka; T. Shimogaki; F. Nagasaki; M. Higashihata; D. Nakamura; H. Ikenoue; T. Okada
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Paper Abstract

We succeeded in synthesizing antimony (Sb)-doped ZnO microspheres by ablating a ZnO sintered target containing 5 wt% of Sb with a Nd:YAG laser at a fluence of 25 J/cm2 in air. The well-spherical ZnO microcrystals with diameters of 1-20 μm were collected on a substrate which was put near the ablation spot. Most of the ZnO microspheres have a crystalline structure. In addition, Raman peak of the Sb-doped ZnO microspheres was shifted toward lower frequency side, indicating substitutional Sb3+ at Zn antisite. Room-temperature photoluminescence properties of the microsphere were investigated under 325 nm He-Cd laser or 355 nm Nd:YAG laser excitation. An ultraviolet (UV) emission and lasing in whispering gallery mode were observed from the photoexcited microsphere.

Paper Details

Date Published: 4 March 2015
PDF: 6 pages
Proc. SPIE 9350, Laser Applications in Microelectronic and Optoelectronic Manufacturing (LAMOM) XX, 93501L (4 March 2015); doi: 10.1117/12.2180460
Show Author Affiliations
T. Tanaka, Kyushu Univ. (Japan)
T. Shimogaki, Kyushu Univ. (Japan)
F. Nagasaki, Kyushu Univ. (Japan)
M. Higashihata, Kyushu Univ. (Japan)
D. Nakamura, Kyushu Univ. (Japan)
H. Ikenoue, Kyushu Univ. (Japan)
T. Okada, Kyushu Univ. (Japan)

Published in SPIE Proceedings Vol. 9350:
Laser Applications in Microelectronic and Optoelectronic Manufacturing (LAMOM) XX
Stephan Roth; Yoshiki Nakata; Beat Neuenschwander; Xianfan Xu, Editor(s)

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