S. Bose—contributing editor
Single Step Growth and Characterization of Zinc Oxide, Tin Oxide, and Composite (ZnxSn1−xOy) Nanoplate and Nanocolumn Electrodes
Article first published online: 13 APR 2011
© 2011 The American Ceramic Society
Journal of the American Ceramic Society
Volume 94, Issue 10, pages 3540–3546, October 2011
How to Cite
Dharmadasa, R., Tahir, A. A. and Wijayantha, K. G. U. (2011), Single Step Growth and Characterization of Zinc Oxide, Tin Oxide, and Composite (ZnxSn1−xOy) Nanoplate and Nanocolumn Electrodes. Journal of the American Ceramic Society, 94: 3540–3546. doi: 10.1111/j.1551-2916.2011.04525.x
This work was supported by the EPSRC, UK, award: EP/F057342/1.
- Issue published online: 4 OCT 2011
- Article first published online: 13 APR 2011
- Manuscript No. 28745. Received October 8, 2010; approved February 21, 2011.
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).