EFFECT OF EU DOPING ON THE OPTICAL PROPERTIES OF ZNO NANORODS PREPARED BY CHEMICAL BATH DEPOSITION

1 YATSKIV Roman
Co-authors:
1 BAŠINOVÁ Nikola 1 GRYM Jan 1 VANIŠ Jan
Institution:
1 Institute of Photonics and Electronics of the CAS, Prague, Czech Republic, EU, yatskiv@ufe.cz
Conference:
10th International Conference on Nanomaterials - Research & Application, Hotel Voronez I, Brno, Czech Republic, EU, October 17th - 19th 2018
Proceedings:
Proceedings 10th International Conference on Nanomaterials - Research & Application
Pages:
88-92
ISBN:
978-80-87294-89-5
ISSN:
2694-930X
Published:
28th February 2019
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
8 views / 2 downloads
Abstract

We report on the properties of Eu-doped ZnO nanorods prepared by chemical bath deposition from aqueous solutions in an autoclave. The autoclave enables to grow the nanorods above the boiling point of water. The nanorods were characterized by scanning electron microscopy, secondary ion mass spectroscopy, and low temperature photoluminescence spectroscopy. Under the UV light excitation, the nanorods show a strong blue emission at 450 nm, which is associated with the 4f65d - 4f4 transitions of Eu2+ ions. We discuss the mechanisms responsible for the blue luminescence. We further clarify how the growth parameters affect the morphology and the optical properties of the nanorods. Growth temperatures above the boiling point of water significantly influence the intensity ratio of the near band edge emission to the deep level emission and greatly enhance optical quality of the nanorods.

Keywords: ZnO nanorods, rare earth elements, europium, energy transfer, luminescence
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