title: Enhanced Photoluminescence in Acetylene-Treated ZnO Nanorods.
abstract: Zinc oxide (ZnO) nanorods were manufactured using the aqueous chemical growth (ACG) method, and the effect of thermal acetylene treatment on their morphology, chemical composition, and optical properties was investigated. Changes in the elemental content of the treated rods were found to be different than in previous reports, possibly due to the different defect concentrations in the samples, highlighting the importance of synthesis method selection for the process. Acetylene treatment resulted in a significant improvement of the ultraviolet photoluminescence of the rods. The greatest increase in emission intensity was recorded on ZnO rods treated at the temperature of 825 °C. The findings imply that the changes brought on by the treatment are limited to the surface of the ZnO rods.
authors.affiliation: Department of Physics and Astronomy, University of Turku, FI-20014, Turku, Finland. lpjapp@utu.fi.
authors.forename: Luke
authors.identifier: http://orcid.org/0000-0001-8080-8728
authors.initials: L
authors.lastname: Jäppinen
authors.affiliation: Department of Physics and Astronomy, University of Turku, FI-20014, Turku, Finland.
authors.forename: Tero
authors.initials: T
authors.lastname: Jalkanen
authors.affiliation: Unité Matériaux et Transformations, Université Lille 1, 59655, Villeneuve d'Ascq, France.
authors.forename: Brigitte
authors.initials: B
authors.lastname: Sieber
authors.affiliation: Unité Matériaux et Transformations, Université Lille 1, 59655, Villeneuve d'Ascq, France.
authors.forename: Ahmed
authors.initials: A
authors.lastname: Addad
authors.affiliation: Department of Physics and Astronomy, University of Turku, FI-20014, Turku, Finland.
authors.forename: Markku
authors.initials: M
authors.lastname: Heinonen
authors.affiliation: Department of Physics and Astronomy, University of Turku, FI-20014, Turku, Finland.
authors.forename: Edwin
authors.initials: E
authors.lastname: Kukk
authors.affiliation: Department of Physics and Astronomy, University of Turku, FI-20014, Turku, Finland.
authors.forename: Ivan
authors.initials: I
authors.lastname: Radevici
authors.affiliation: Department of Physics and Astronomy, University of Turku, FI-20014, Turku, Finland.
authors.forename: Petriina
authors.initials: P
authors.lastname: Paturi
authors.affiliation: Institute of Biomedicine, University of Turku, FI-20014, Turku, Finland.
authors.forename: Markus
authors.initials: M
authors.lastname: Peurla
authors.affiliation: Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, FI-00014, Helsinki, Finland.
authors.forename: Mohammad-Ali
authors.initials: MA
authors.lastname: Shahbazi
authors.affiliation: Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, FI-00014, Helsinki, Finland.
authors.forename: Hélder A
authors.initials: HA
authors.lastname: Santos
authors.affiliation: Institut d'Electronique, de Microélectronique et de Nanotechnologie (IEMN), Université Lille 1, 59652, Villeneuve d'Ascq, France.
authors.forename: Rabah
authors.initials: R
authors.lastname: Boukherroub
authors.affiliation: Department of Chemistry, University of Turku, FI-20014, Turku, Finland.
authors.forename: Hellen
authors.initials: H
authors.lastname: Santos
authors.affiliation: Department of Chemistry, University of Turku, FI-20014, Turku, Finland.
authors.forename: Mika
authors.initials: M
authors.lastname: Lastusaari
authors.affiliation: Department of Physics and Astronomy, University of Turku, FI-20014, Turku, Finland.
authors.forename: Jarno
authors.initials: J
authors.lastname: Salonen
keywords: C2H2; Nanorods; Photoluminescence; Thermal annealing; ZnO