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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Highly selective ozone gas sensor based on nanocrystalline Zn0.95Co0.05O thin film obtained via spray pyrolysis technique

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Author(s):
Onofre, Yina J. [1] ; Catto, Ariadne C. [1] ; Bernardini, Sandrine [2] ; Fiorido, Tomas [2] ; Aguir, Khalifa [2] ; Longo, Elson [3] ; Mastelaro, Valmor R. [4] ; da Silva, Luis F. [1] ; de Godoy, Marcio P. F. [1]
Total Authors: 9
Affiliation:
[1] Univ Fed Sao Carlos UFScar, Dept Phys, BR-13565905 Sao Carlos, SP - Brazil
[2] Aix Marseille Univ, IM2NP, CNRS, UMR 7334, FS St Jerome S152, F-13397 Marseille - France
[3] Univ Fed Sao Carlos UFSCar, Ctr Dev Funct Mat, BR-13565905 Sao Carlos, SP - Brazil
[4] Univ Sao Paulo, Insitute Phys Sao Carlos, BR-13566590 Sao Carlos, SP - Brazil
Total Affiliations: 4
Document type: Journal article
Source: Applied Surface Science; v. 478, p. 347-354, JUN 1 2019.
Web of Science Citations: 1
Abstract

Chemiresistors are highly important for monitoring and detection of harmful gases produced from industrial processes and vehicle emissions. We report herein an experimental investigation of the gas-sensing properties of Zn0.95Co0.05O thin film deposited by spray pyrolysis technique. The X-ray photoelectron spectroscopy indicated the presence of Co2+ ions into de ZnO lattice. The gas-sensing measurements revealed the sensitivity of Zn0.95Co0.05O film towards ozone gas in a wide range of concentrations from 20 to 1040 ppb, exhibiting good repeatability and total reversibility after consecutive exposures. Selectivity for ozone is observed in comparison to NO2, NH3, and CO gases even at low levels. This manuscript reports the effectiveness of spray-pyrolysis method for obtaining nanostructured Zn1-xCoxO thin films for practical applications as an ozone gas sensor. (AU)

FAPESP's process: 13/07296-2 - CDMF - Center for the Development of Functional Materials
Grantee:Elson Longo da Silva
Support Opportunities: Research Grants - Research, Innovation and Dissemination Centers - RIDC
FAPESP's process: 16/10973-4 - Defects and their features in semiconductor oxides films produced by spray-pyrolysis technique
Grantee:Marcio Peron Franco de Godoy
Support Opportunities: Regular Research Grants
FAPESP's process: 17/12437-5 - Preparation and characterization of semiconductor nanoheterojunctions applied in photoactived gas sensors
Grantee:Luís Fernando da Silva
Support Opportunities: Regular Research Grants