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Preparation of Shape and Size-Controlled Zinc Oxide Nanostructures by Chemical Spray Pyrolysis Technique

Published online by Cambridge University Press:  01 February 2011

Tatjana Dedova ,
Malle Krunks ,
Arvo Mere ,
Jelena Klauson  and
Olga Volobujeva
Tatjana Dedova
Affiliation:
dedova@staff.ttu.ee, Tallinn University of Technology, Department of Materials Science, Ehitajate tee 5, Tallinn, 19086, Estonia, +3726203369, +3726203367
Malle Krunks
Affiliation:
malle@staff.ttu.ee, Tallinn University of Technology, Department of Materials Science, Ehitajate tee 5, Tallinn, 19086, Estonia
Arvo Mere
Affiliation:
amere@staff.ttu.ee, Tallinn University of Technology, Department of Materials Science, Ehitajate tee 5, Tallinn, 19086, Estonia
Jelena Klauson
Affiliation:
contreras@mail.ru, Tallinn University of Technology, Department of Materials Science, Ehitajate tee 5, Tallinn, 19086, Estonia
Olga Volobujeva
Affiliation:
olgav@staff.ttu.ee, Tallinn University of Technology, Department of Materials Science, Ehitajate tee 5, Tallinn, 19086, Estonia
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Abstract

Highly structured layers comprising of vertically aligned zinc oxide rods, tripods or platelets were fabricated by spray pyrolysis method at temperatures of 510-550 °C. The zinc chloride solution was pulverized onto the preheated substrates of glass and ITO, SnO2, ZnO covered glass substrates with the help of compressed air as a carrier gas. ZnO layers were characterized by scanning electron microscopy and Raman spectroscopy. C-axis orientated ZnO nanorod arrays of well-developed hexagonal rods with length from some hundreds of nanometers up to some microns and with diameter from 70 nm up to 900 nm . The rise of both the growth temperature and solution concentration increases rod dimensions. Deposition of the solutions with the concentration of 0.05 up to 0.2 mol/l results in structured layers composed of rods on glass substrates. Using ITO, SnO2 and ZnO thin film covered glasses diluted solutions should be used to obtain ZnO nanorods. Alcoholic solutions allow deposit thinner rods and reduce the deposition temperature. Very strong and relatively narrow E2 Raman bands indicate that ZnO rods prepared by spray pyrolysis technique are of high crystal quality.

Keywords

spray pyrolysisnanostructureRaman spectroscopy
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 957: Symposium K – Zinc Oxide and Related Materials , 2006 , 0957-K10-26
Copyright
Copyright © Materials Research Society 2007

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References

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