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  1. Chemosensors
  2. Volume: 5
  3. Issue: 2
  4. Highly Sensitive ZnO(Ga, In) for Sub-ppm Level NO2 Detection: Effect of Indium Content
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Volume: 5
Issue: 4
Issue: 3
Issue: 2
Ultra-Sensitive Optical Resonator for Organic Solvents Detection Based on Whispering Gallery Modes
Highly Sensitive ZnO(Ga, In) for Sub-ppm Level NO2 Detection: Effect of Indium Content
Two-Dimensional Zinc Oxide Nanostructures for Gas Sensor Applications
Surface Plasmon Resonance Immunosensor for the Detection of Campylobacter jejuni
Two-Dimensional Transition Metal Disulfides for Chemoresistive Gas Sensing: Perspective and Challenges
Microfluidic Electronic Tongue Applied to Soil Analysis
Electrochemical Immunosensors and Aptasensors
A Chemically-Bound Glutathione Sensor Bioinspired by the Defense of Organisms against Heavy Metal Contamination: Optimization of the Immobilization Conditions
Enzymes as Tools in MIP-Sensors
Issue: 1
Volume: 4
Volume: 3
Volume: 2
Volume: 1

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Highly Sensitive ZnO(Ga, In) for Sub-ppm Level NO2 Detection: Effect of Indium Content

Content Provider MDPI
Author Vorobyeva, Natalia Rumyantseva, Marina Filatova, Darya Spiridonov, Felix Zaytsev, Vladimir Zaytseva, Anna Gaskov, Alexander
Abstract Nanocrystalline ZnO, ZnO(Ga), and ZnO(Ga, In) samples with different indium contents were prepared by wet-chemical method and characterized in detail by ICP-MS and XRD methods. Gas sensing properties toward NO2 were studied at 150–450 °C by DC conductance measurements. The optimal temperature for gas sensing experiments was determined. The dependence of the ZnO(Ga, In) sensor signal to NO2 at 250 °C correlates with the change of conductivity of the samples. The introduction of indium into the system leads to an increase in the values of the sensor signal in the temperature range T < 250 °C. The investigation of the local sample conductivity by scanning spreading resistance microscopy demonstrates that, at high indium content, the sensor properties are determined by the In–Ga–Zn–O layer that forms on the ZnO surface.
File Size 3405824
File Format PDF
e-ISSN 22279040
DOI 10.3390/chemosensors5020018
Journal Chemosensors
Issue Number 2
Volume Number 5
Language English
Publisher Date 2017-06-01
Access Restriction Open
Subject Keyword zinc oxide Ga and In codoped ZnO $NO_{2}$ gas sensor
Content Type Text
Resource Type Article
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