Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9676010 | Colloids and Surfaces A: Physicochemical and Engineering Aspects | 2005 | 5 Pages |
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 â¼200 °C and was complete at â¼350 °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 â¼3.3 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
Authors
M. Parhizkar, Nigvendra Kumar, P.K. Nayak, Sukhvinder Singh, S.S. Talwar, S.S. Major, R.S. Srinivasa,