Article ID Journal Published Year Pages File Type
9676010 Colloids and Surfaces A: Physicochemical and Engineering Aspects 2005 5 Pages PDF
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.
Related Topics
Physical Sciences and Engineering Chemical Engineering Colloid and Surface Chemistry
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