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Title: Fabrication and characterization of nano-gas sensor arrays

A novel structures of Nanomaterials gas sensors array constructed using ZnO, and ZnO doped with Al via sol-gel technique. Two structure arrays are developed; the first one is a double sensor array based on doping with percentages of 1% and 5%. The second is a quadrature sensor array based on several doping ratios concentrations (0%, 1%, 5% and 10%). The morphological structures of prepared ZnO were revealed using scanning electron microscope (SEM). X-ray diffraction (XRD) patterns reveal a highly crystallized wurtzite structure and used for identifying phase structure and chemical state of both ZnO and ZnO doped with Al under different preparation conditions and different doping ratios. Chemical composition of Al-doped ZnO nanopowders was performed using energy dispersive x-ray (EDS) analysis. The electrical characteristics of the sensor are determined by measuring the two terminal sensor’s output resistance for O{sub 2}, H{sub 2} and CO{sub 2} gases as a function of temperature.
Authors:
;  [1] ; ; ;  [2]
  1. Electronic Materials Researches Department, Advanced Technology and New Materials Research Institute, City of Scientific Researches and technological applications, New Borg El-Arab City, Alexandria (Egypt)
  2. Arab Academy for Science and Technology, and Maritime Transport, Alexandria, 21936 (Egypt)
Publication Date:
OSTI Identifier:
22391306
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1653; Journal Issue: 1; Conference: APMAS 2014: 4. International Congress in Advances in Applied Physics and Materials Science, Fethiye (Turkey), 24-27 Apr 2014; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ALUMINIUM COMPOUNDS; CARBON DIOXIDE; CHEMICAL COMPOSITION; CHEMICAL STATE; CONCENTRATION RATIO; CUBIC LATTICES; DOPED MATERIALS; ELECTRIC CONDUCTIVITY; FABRICATION; NANOMATERIALS; NANOSTRUCTURES; POWDERS; QUADRATURES; SCANNING ELECTRON MICROSCOPY; SENSORS; SOL-GEL PROCESS; TEMPERATURE DEPENDENCE; X-RAY DIFFRACTION; ZINC OXIDES