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- Title
Single Step Growth and Characterization of Zinc Oxide, Tin Oxide, and Composite (Zn<sub>x</sub>Sn<sub>1−x</sub>O<sub>y</sub>) Nanoplate and Nanocolumn Electrodes.
- Authors
Dharmadasa, Ruvini; Tahir, Asif A.; Wijayantha, K. G. Upul
- Abstract
The demand for nanostructured metal oxide electrodes in optoelectronic devices requires investigation of simple and scalable deposition processes. In this study we demonstrate the flexibility of aerosol-assisted chemical vapor deposition to fabricate single and mixed oxide electrodes. The composition, structure, and morphology can easily be controlled by varying the Zn:Sn ratio of the precursor solution. X-ray diffractometric analysis proved that the structure and composition were strongly dependent on the Zn concentration in the precursor. ZnO, SnO2, and a range of ZnO/SnO2 composite electrodes were fabricated by gradually decreasing the Zn content in the precursor solution. A diverse range of nanostructures were also created as the Zn:Sn ratio was varied. The morphology of the electrodes changed from nanoparticles, to nanoplates and nanocolumns with the change in the Zn:Sn ratio. Diffuse reflectance spectroscopy confirmed the high optical absorption of the materials in the UV region. It was found that by controlling the Zn:Sn ratio of the precursor, the optical properties of the electrodes could be finely tuned between the bandgap ( Eg) of ZnO ( Eg∼3.31 eV) and SnO2 ( Eg∼3.55 eV).
- Subjects
ZINC oxide; METALLIC oxides; OPTOELECTRONIC devices; CHEMICAL vapor deposition; ELECTRODES; X-ray diffraction; REFLECTANCE spectroscopy; LIGHT absorption
- Publication
Journal of the American Ceramic Society, 2011, Vol 94, Issue 10, p3540
- ISSN
0002-7820
- Publication type
Article
- DOI
10.1111/j.1551-2916.2011.04525.x