Published July 2017 | Version v1
Journal article Metadata-only

Synthesis of flower shaped ZnO thin films for resistive sensing of NO2 gas

Creators

  • 1. C. H. C. Arts, S. G. P. Commerce, and B. B. J. P. Science College (India)
  • 2. R. F. N. S. Senior Science College (India)
  • 3. Shivaji University, Department of Chemistry (India)
  • 4. Shivaji University, Thin Film Materials Laboratory, Department of Physics (India)
  • 5. Shivaji University, q-SpinTech and Nanomaterials Laboratory, Department of Physics (India)

Description

A soft chemical synthetic method is used to obtain highly crystalline ZnO flower thin films. Hexagonal wurtzite ZnO structure is observed from X-ray diffraction studies. A large-area jasmine flower-shaped morphology of ZnO is uniformly maintained at all deposition temperatures. The films were characterized by energy dispersive X-ray spectroscopy, Raman spectroscopy and field emission scanning electron microscopy. Elemental analysis showed the presence of Zn and O elements without any other impurity. Raman spectroscopy spectroscopy in combination with elemental and resistivity analysis indicated wurtzite ZnO structure and the presence of oxygen vacancies. The films deposited at 338 K were studied with respect to their gas sensing capability at operating temperatures of 473 K. They show a fast response (65 s) and recovery time (54 s) for NO2 gas at a concentration as low as 10 ppm. .

Additional details

Identifiers

DOI
10.1007/s00604-017-2271-7;

Publishing Information

Journal Title
Mikrochimica Acta
Journal Volume
184
Journal Issue
7
Journal Page Range
p. 2455-2463
ISSN
0026-3672
CODEN
MIACAQ

INIS

Country of Publication
Austria
Country of Input or Organization
Austria
INIS RN
49074936
Subject category
S77: NANOSCIENCE AND NANOTECHNOLOGY;
Descriptors DEI
CHEMICAL PREPARATION; CRYSTAL STRUCTURE; DEPOSITION; NITROGEN DIOXIDE; RAMAN SPECTROSCOPY; SCANNING ELECTRON MICROSCOPY; TEMPERATURE RANGE 0400-1000 K; THIN FILMS; X-RAY SPECTROSCOPY; ZINC OXIDES
Descriptors DEC
CHALCOGENIDES; ELECTRON MICROSCOPY; FILMS; LASER SPECTROSCOPY; MICROSCOPY; NITROGEN COMPOUNDS; NITROGEN OXIDES; OXIDES; OXYGEN COMPOUNDS; SPECTROSCOPY; SYNTHESIS; TEMPERATURE RANGE; ZINC COMPOUNDS

Optional Information

Copyright
Copyright (c) 2017 Springer-Verlag Wien