Author, as appears in the article.: El Fidha, Ghada; Bitri, Nabila; Mahjoubi, Sarra; Chaabouni, Fatma; Llobet, Eduard; Casanova-Chafer, Juan
Department: Enginyeria Electrònica, Elèctrica i Automàtica
URV's Author/s: Casanova Chafer, Juan / Llobet Valero, Eduard
Keywords: Zno thin-films Temperature Sensors Selectivity Optical-properties No2 Nh3 Nanostructures Humidity Gas sensor Ethanol Dy-doped zno Dy Al
Abstract: Pure and dysprosium-loaded ZnO films were grown by radio-frequency magnetron sputtering. The films were characterized using a wide variety of morphological, compositional, optical, and electrical techniques. The crystalline structure, surface homogeneity, and bandgap energies were studied in detail for the developed nanocomposites. The properties of pure and dysprosium-doped ZnO thin films were investigated to detect nitrogen dioxide (NO2) at the ppb range. In particular, ZnO sensors doped with rare-earth materials have been demonstrated as a feasible strategy to improve the sensitivity in comparison to their pure ZnO counterparts. In addition, the sensing performance was studied and discussed under dry and humid environments, revealing noteworthy stability and reliability under different experimental conditions. In this perspective, additional gaseous compounds such as ammonia and ethanol were measured, resulting in extremely low sensing responses. Therefore, the gas-sensing mechanisms were discussed in detail to better understand the NO2 selectivity given by the Dy-doped ZnO layer.
Thematic Areas: Zootecnia / recursos pesqueiros Química Medicine (miscellaneous) Medicina veterinaria Medicina iii Medicina ii Medicina i Materiais Matemática / probabilidade e estatística Linguística e literatura Letras / linguística Interdisciplinar Instruments & instrumentation Instrumentation Information systems Geografía Geociências Farmacia Engineering, electrical & electronic Engenharias iv Engenharias iii Engenharias ii Engenharias i Electrochemistry Electrical and electronic engineering Educação física Ciências biológicas iii Ciências biológicas ii Ciências biológicas i Ciências ambientais Ciências agrárias i Ciência de alimentos Ciência da computação Chemistry, analytical Biotecnología Biodiversidade Biochemistry Atomic and molecular physics, and optics Astronomia / física Arquitetura, urbanismo e design Analytical chemistry
licence for use: https://creativecommons.org/licenses/by/3.0/es/
Author's mail: juan.casanova@urv.cat eduard.llobet@urv.cat
Author identifier: 0000-0001-6164-4342
Record's date: 2024-10-12
Papper version: info:eu-repo/semantics/publishedVersion
Link to the original source: https://www.mdpi.com/1424-8220/22/14/5173
Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
Papper original source: Sensors. 22 (14): 5173-
APA: El Fidha, Ghada; Bitri, Nabila; Mahjoubi, Sarra; Chaabouni, Fatma; Llobet, Eduard; Casanova-Chafer, Juan (2022). Dysprosium Doped Zinc Oxide for NO2 Gas Sensing. Sensors, 22(14), 5173-. DOI: 10.3390/s22145173
Article's DOI: 10.3390/s22145173
Entity: Universitat Rovira i Virgili
Journal publication year: 2022
Publication Type: Journal Publications
Repositori URV