Journal
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
Volume 97, Issue 4, Pages 1028-1034Publisher
WILEY
DOI: 10.1111/jace.12819
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Funding
- National Science Foundation [CBET-1332022, EEC-1062955]
- University of Connecticut Research Foundation
- Directorate For Engineering
- Div Of Chem, Bioeng, Env, & Transp Sys [1332022] Funding Source: National Science Foundation
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ZnO nanorods have been studied extensively due to facile synthesis and useful optoelectronic properties for applications in nanoscale devices. In a common two-step procedure, an ethanolic Zn2+ precursor solution is used to deposit ZnO seed crystals on a substrate, which is then immersed in an aqueous Zn2+ precursor solution to grow the nanorods. Here, a forced hydrolysis technique was employed based on additions of water and heat to the seed precursor solution before depositing the seeds on commercial fluorine-doped tin oxide (FTO)/glass substrates. ZnO nanorods were then grown from these seeds by chemical bath deposition. Analyses showed that the forced hydrolysis resulted in an increase in seed crystallite size and a decrease in the number of seeds deposited. With increasing seed size, the number density of nanorods decreased, while the length and diameter of each rod increased. These findings offer a simple method for exerting control over the number density of ZnO nanorods that is compatible with the rough FTO surface, unlike other methods that require smoother substrates.
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