title: Tuning of ZnO 1D nanostructures by atomic layer deposition and electrospinning for optical gas sensor applications.
abstract: We explored for the first time the ability of a three-dimensional polyacrylonitrile/ZnO material-prepared by a combination of electrospinning and atomic layer deposition (ALD) as a new material with a large surface area-to enhance the performance of optical sensors for volatile organic compound (VOC) detection. The photoluminescence (PL) peak intensity of these one-dimensional nanostructures has been enhanced by a factor of 2000 compared to a flat Si substrate. In addition, a phase transition of the ZnO ALD coating from amorphous to crystalline has been observed due to the properties of a polyacrylonitrile nanofiber template: surface strain, roughness, and an increased number of nucleation sites in comparison with a flat Si substrate. The greatly improved PL performance of these nanostructured surfaces could produce exciting materials for implantation in VOC optical sensor applications.
authors.affiliation: Department of Experimental Physics, Odessa National I.I. Mechnikov University, 42, Pastera str., 65023 Odessa, Ukraine. Institute of Atomic Physics and Spectroscopy, University of Latvia, 19 Raina Blvd., LV 1586, Riga, Latvia.
authors.forename: Roman
authors.initials: R
authors.lastname: Viter
authors.forename: Adib
authors.initials: A
authors.lastname: Abou Chaaya
authors.forename: Igor
authors.initials: I
authors.lastname: Iatsunskyi
authors.forename: Grzegorz
authors.initials: G
authors.lastname: Nowaczyk
authors.forename: Kristaps
authors.initials: K
authors.lastname: Kovalevskis
authors.forename: Donats
authors.initials: D
authors.lastname: Erts
authors.forename: Philippe
authors.initials: P
authors.lastname: Miele
authors.forename: Valentyn
authors.initials: V
authors.lastname: Smyntyna
authors.forename: Mikhael
authors.initials: M
authors.lastname: Bechelany