Luminescent properties of ZnO nanoparticles doped with W obtained in plasma discharge in liquid under ultrasonic cavitation

N. A. Bulychev; M. I. Danilkin; N. Yu. Vereschagina; M. A. Kazaryan

doi:10.1117/12.2554522

11 December 2019 Luminescent properties of ZnO nanoparticles doped with W obtained in plasma discharge in liquid under ultrasonic cavitation

N. A. Bulychev, M. I. Danilkin, N. Yu. Vereschagina, M. A. Kazaryan

Author Affiliations +

Proceedings Volume 11322, XIV International Conference on Pulsed Lasers and Laser Applications; 113221S (2019) https://doi.org/10.1117/12.2554522
Event: XIV International Conference on Pulsed Lasers and Laser Applications (AMPL-2019), 2019, Tomsk, Russian Federation

Abstract

ZnO:W luminescent material was prepared and characterized. We compare nano-sized and bulk material composition and luminescence. Nanoparticles were prepared by a novel acoustoplasma technique (plasma discharge in a liquid at an intensive ultrasonic field above the cavitation threshold). Bulk ZnO:W was prepared by classical annealing way from the mixture of ZnO powder and H2WO4. Under excitation with a pulsed electron beam, the ZnO:W nanoparticles demonstrated very low luminescence efficiency while the bulk sample produced intensive green cathodoluminescence. The most intensive green luminescence was observed after annealing of the sample in air, which excludes a well-known mechanism involving anion vacancies. Probably, tungsten impurity tunes excitonic luminescence towards longer wavelengths, but this point requires further investigations for verification.

Citation Download Citation

N. A. Bulychev, M. I. Danilkin, N. Yu. Vereschagina, and M. A. Kazaryan "Luminescent properties of ZnO nanoparticles doped with W obtained in plasma discharge in liquid under ultrasonic cavitation", Proc. SPIE 11322, XIV International Conference on Pulsed Lasers and Laser Applications, 113221S (11 December 2019); https://doi.org/10.1117/12.2554522

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