Number Density and Diameter Control of Chemical Bath Deposition of ZnO Nanorods on FTO by Forced Hydrolysis of Seed Crystals. Issue 4 (31st January 2014)

• Record Type: Journal Article
• Authors: Manthina, Venkata; Patel, Tulsi; Agrios, Alexander G.; Riman, R.
• Is Part Of: Journal of the American Ceramic Society. Volume 97:Issue 4(2014)
• Page Start: 1028
• Page End: 1034
• Publication Date: 2014-01-31
• Subjects: Ceramics -- Periodicals; 620.1405
• DOI: 10.1111/jace.12819
• Languages: English
• ISSNs: 0002-7820

Abstract

<abstract abstract-type="main" id="jace12819-abs-0001"> <title> <x xml:space="preserve">Abstract</x> </title> <p>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.</p> </abstract>