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

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

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Title: Nanocrystalline ZnO films prepared by pyrolysis of Zn-arachidate LB multilayers
Author: PARHIZKAR, M; NIGVENDRA KUMAR; NAYAK, PK; SINGH, SUKHVINDER; TALWAR, SS; MAJOR, SS; SRINIVASA, RS
Abstract: 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.
URI: 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
Date: 2005


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