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© 2023 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.

Abstract

Zinc oxide nanopowder was synthesized by the coprecipitation method. FT-IR and EDS analyses were performed to qualitatively determine the composition of the nanopowder. FE-SEM images revealed the morphology of the nanopowder formed by clusters of nanoparticles. An XRD analysis confirmed the wurtzite structure with a crystallite size of ~21.2 nm. UV–Vis measurements were performed to determine the ZnO bandgap (~3.05 eV) using the Tauc plot method in the absorbance spectra. The ZnO nanopowder and two comb-like metal contacts were confined and compacted between two polymeric layers by a low-temperature thermal lamination method, resulting in a flexible Polymer/ZnO/Metal/ZnO/Polymer structure. Part of each comb-like metal was kept uncovered by a polymeric layer in order to be used for electrical characterization. I-V measurements of the flexible structure were performed in the dark and under UV illumination, showing the capacity to detect UV radiation and its potential application as a visible-blind UV sensor. A facile and low-cost flexible optoelectronic device is presented, avoiding using high-vacuum or high-temperature technology. This new and novel approach to developing optoelectronic devices proposes using powder materials as semiconducting active regions instead of thin films; this could eliminate the cracking and delamination problems of flexible devices based on thin film technology.

Details

Title
Flexible Ultraviolet Sensor Based on Zinc Oxide Nanoparticle Powder
Author
Munguía-Fernández, Nicol Alejandra 1 ; Castillo-Saenz, Jhonathan Rafael 2 ; Perez-Landeros, Oscar Manuel 2 ; Nedev, Roumen 2 ; Mateos, David 2   VIAFID ORCID Logo  ; Paz, Judith 2 ; Suárez, Mariel 1 ; Curiel-Alvarez, Mario Alberto 2   VIAFID ORCID Logo  ; Nedev, Nicola 2   VIAFID ORCID Logo  ; Arias, Abraham 1   VIAFID ORCID Logo 

 Facultad de Ingeniería, Universidad Autónoma de Baja California, Blvd. Benito Juárez s/n C.P., Mexicali 21280, Mexico; nicol.munguia@uabc.edu.mx (N.A.M.-F.); 
 Instituto de Ingeniería, Universidad Autónoma de Baja California, Blvd. Benito Juárez s/n C.P., Mexicali 21280, Mexicoroumen.nedev@uabc.edu.mx (R.N.); 
First page
1672
Publication year
2023
Publication date
2023
Publisher
MDPI AG
e-ISSN
20734352
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2904643495
Copyright
© 2023 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.