Synthesis of Sb-doped ZnO microspheres by pulsed laser ablation and their photoluminescence properties

T. Tanaka; T. Shimogaki; F. Nagasaki; M. Higashihata; D. Nakamura; H. Ikenoue; T. Okada

doi:10.1117/12.2180460

4 March 2015 Synthesis of Sb-doped ZnO microspheres by pulsed laser ablation and their photoluminescence properties

T. Tanaka, T. Shimogaki, F. Nagasaki, M. Higashihata, D. Nakamura, H. Ikenoue, T. Okada

Proceedings Volume 9350, Laser Applications in Microelectronic and Optoelectronic Manufacturing (LAMOM) XX; 93501L (2015) https://doi.org/10.1117/12.2180460
Event: SPIE LASE, 2015, San Francisco, California, United States

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.

Citation Download Citation

T. Tanaka, T. Shimogaki, F. Nagasaki, M. Higashihata, D. Nakamura, H. Ikenoue, and T. Okada "Synthesis of Sb-doped ZnO microspheres by pulsed laser ablation and their photoluminescence properties", Proc. SPIE 9350, Laser Applications in Microelectronic and Optoelectronic Manufacturing (LAMOM) XX, 93501L (4 March 2015); https://doi.org/10.1117/12.2180460

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