Effect of EU doping on the optical properties of ZnO nanorods prepared by chemical bath deposition

0523555 - ÚFE 2020 RIV CZ eng C - Conference Paper (international conference)
Yatskiv, Roman - Bašinová, Nikola - Grym, Jan - Vaniš, Jan
Effect of EU doping on the optical properties of ZnO nanorods prepared by chemical bath deposition.
NANOCON 2018 : Conference Proceedings of the International Conference on Nanomaterials - Research & Application /10./. Ostrava: Tanger Ltd., 2019 - (Shrbená, J.), s. 88-92. ISBN 978-80-87294-89-5.
[Anniversary International Conference on Nanomaterials - Research and Application (NANOCON) /10./. Brno (CZ), 17.10.2018-19.10.2018]
R&D Projects: GA ČR(CZ) GA17-00546S; GA ČR(CZ) GA17-00355S
Institutional support: RVO:67985882
Keywords : ZnO nanorods * Europium * Energy transfer
OECD category: Electrical and electronic engineering

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 4f(6)5d - 4f(4) 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.
Permanent Link: http://hdl.handle.net/11104/0307897