Morphology evolution of ZnO thin films from aqueous solutions and their application to liquefied petroleum gas (LPG) sensor

K. V. Gurav, U. M. Patil, S. W. Shin, S. M. Pawar, J. H. Kim, C. D. Lokhande

Research output: Contribution to journalArticlepeer-review

52 Scopus citations

Abstract

The chemical bath deposition method is used to prepare two-dimensional flakes and one-dimensional rods of ZnO. By changing the bath temperature, ZnO morphology can be changed from flakes to rods. Further orientation of ZnO rods are selectively controlled by varying the content of H 2O 2 in the bath solution. These films are structurally and morphologically characterized using X-ray diffraction and scanning electron microscopy respectively. The dependence of liquefied petroleum gas (LPG) sensing properties on morphology and orientation of ZnO thin film are investigated. The vertically aligned ZnO rods exhibited the maximum gas response of 49% at 573 K upon exposure to 5200 ppm of LPG.

Original languageEnglish (US)
Pages (from-to)1-7
Number of pages7
JournalJournal of Alloys and Compounds
Volume525
DOIs
StatePublished - Jun 5 2012

Bibliographical note

Funding Information:
Authors are grateful to the Department of Science and Technology, New Delhi for financial support through the scheme no. SR/S2/CMP-82/2006.This research was partially supported by National Research Foundation of Korea (NRF) Grant funded by the Korean government. One of author KVG is thankfull to Dr. R. S. Kalubarme for having fruitfull discussions.

Copyright:
Copyright 2012 Elsevier B.V., All rights reserved.

Keywords

  • Chemical deposition
  • LPG sensor
  • SEM
  • Vertically aligned ZnO rods
  • XRD
  • ZnO flakes

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