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Nanocrystalline ZnO films prepared by pyrolysis of Zn-arachidate LB multilayers

DSpace at IIT Bombay

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Title Nanocrystalline ZnO films prepared by pyrolysis of Zn-arachidate LB multilayers
 
Creator PARHIZKAR, M
NIGVENDRA KUMAR
NAYAK, PK
SINGH, SUKHVINDER
TALWAR, SS
MAJOR, SS
SRINIVASA, RS
 
Subject langmuir blodgett films
electron diffraction
heat treatment
multilayers
 
Description Nanocrystalline, zinc oxide films have been formed by the pyrolysis of zinc arachidate LB multilayers in oxygen ambient. FT-IR and UV–vis spectroscopy showed that on heat treatment, the pyrolysis began at ~200 °C and was complete at ~350 °C. TEM studies showed that the heat treatment results in the formation of a continuous and uniform ZnO film consisting of nanocrystallites of size 5 ± 2 nm. Electron diffraction studies show that the film consists of an unusual phase reported as “leafy and thin platy crystal”, obtained under high-pressure conditions. The band gap of the film, estimated from a plot of α versus hν was found to be ~3.3 eV. It is interesting to note that the presence of the unusual phase and nanocrystalline nature do not have a significant effect on the optical gap of the ZnO film.
 
Publisher Elsevier
 
Date 2009-03-23T05:11:56Z
2011-11-25T20:04:55Z
2011-12-26T13:07:49Z
2011-12-27T05:55:46Z
2009-03-23T05:11:56Z
2011-11-25T20:04:55Z
2011-12-26T13:07:49Z
2011-12-27T05:55:46Z
2005
 
Type Article
 
Identifier Colloids and Surfaces A: Physicochemical and Engineering Aspects 257-258, 445-449
0927-7757
http://dx.doi.org/10.1016/j.colsurfa.2004.10.040
http://hdl.handle.net/10054/1057
http://dspace.library.iitb.ac.in/xmlui/handle/10054/1057
 
Language en