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
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Creator |
PARHIZKAR, M
NIGVENDRA KUMAR NAYAK, PK SINGH, SUKHVINDER TALWAR, SS MAJOR, SS SRINIVASA, RS |
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Subject |
langmuir blodgett films
electron diffraction heat treatment multilayers |
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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.
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Publisher |
Elsevier
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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 |
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Type |
Article
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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 |
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Language |
en
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