• International Journal of Technology (IJTech)
  • Vol 6, No 4 (2015)

The Effects of Annealing Temperature and Seed Layer on the Growth of ZnO Nanorods in a Chemical Bath Deposition Process

Amalia Sholehah, Akhmad Herman Yuwono

Corresponding email: ahyuwono@eng.ui.ac.id

Published at : 27 Oct 2015
Volume : IJtech Vol 6, No 4 (2015)
DOI : https://doi.org/10.14716/ijtech.v6i4.1948

Cite this article as:

Sholehah, A., Yuwono, A.H., 2015. The Effects of Annealing Temperature and Seed Layer on the Growth of ZnO Nanorods in a Chemical Bath Deposition Process. International Journal of Technology. Volume 6(4), pp. 565-572

Amalia Sholehah Department of Metallurgical and Materials Engineering, Faculty of Engineering, Universitas Indonesia, Kampus UI Depok, Depok 16424, Indonesia
Akhmad Herman Yuwono Department of Metallurgical and Materials Engineering, Faculty of Engineering, Universitas Indonesia, Kampus UI Depok, Depok 16424, Indonesia
Email to Corresponding Author


Zinc oxide (ZnO) nanorods have been considered as a potential semiconductor oxide material for the application of dye-sensitized solar cells (DSSC). Various experiments have been conducted to improve its nanostructural characteristics and functional properties in order to make it well suited for enhancing DSSC’ performance. Inspired by such studies, the ZnO nanorods array was grown on indium tin oxide (InSn2O3, ITO) substrate in the present work. For this purpose, a seed solution was prepared at low temperature (0oC) using zinc nitrate tetrahydrate and hexamethylenetetramine. The ZnO seed layers were deposited onto ITO glass using a spin-coating technique and further annealed at two different temperatures, 200 and 400 oC. The seeding was also varied between one, three and five layers, prior to the growing process using the chemical bath deposition method (CBD). The results showed that the annealing temperatures significantly influenced the ZnO nanorods’ growth. The optimal condition was achieved by using three seed layers annealed at 200oC, providing an average diameter of 157.58 nm, the biggest crystallite size (up to 59.63 nm), and a band-gap energy (Eg) of 3.27 eV. Based on the obtained properties, the growth of ZnO nanorods on ITO substrate in this work has the potential to be used for the application of dye-sensitized solar cells.

Annealing temperature, Chemical bath deposition, Seed layers, ZnO nanorods


Adriyanto, F., Sze, P., Wang, Y., 2008. ZnO Nanorods on Plastic Substrate from Zinc Nitrate Hexahydrate and Hexamethylenetetramine Solution. In: Proceedings of the 9th International Conference on Solid-State and Integrated-Circuit Technology, pp. 2–5. Beijing, China: IEEE

Ameen, S., Akhtar, M.S., Kim, Y.S., Yang, O.B., Shin, H.S., 2011. Influence of Seed Layer Treatment on Low Temperature Grown ZnO Nanotubes: Performances in Dye Sensitized Solar Cells. Electrochimica Acta, Volume 56(3), pp. 1111–1116

Anh, V., Anh, L., Quang, T., Ngoc, V., Quy, N.V., 2013. Applied Surface Science Enhanced NH3 Gas Sensing Properties of a QCM Sensor by Increasing the Length of Vertically Orientated ZnO Nanorods. Applied Surface Science, Volume 265, pp. 458–464

Breedon, M., Rix, C., Kalantar-zadeh, K., 2009. Seeded Growth of ZnO Nanorods from NaOH Solutions. Materials Letters, Volume 63(2), pp. 249–251

Guo, M., Diao, P., Cai, S., 2005. Hydrothermal Growth of Perpendicularly Oriented ZnO Nanorod Array Film and its Photoelectrochemical Properties. Applied Surface Science, Volume 249(1–4), pp. 71–75

Kenanakis, G., Vernardou, D., Koudoumas, E., Katsarakis, N., 2009. Growth of C-axis Oriented ZnO Nanowires from Aqueous Solution: The Decisive Role of a Seed Layer for Controlling the Wires’ Diameter. Journal of Crystal Growth, Volume 311(23-24), pp. 4799–4804

Lang, J., Yang, J., Li, C., Yang, L., Han, Q., Zhang, Y., Liu, X., 2008. Synthesis and Optical Properties of ZnO Nanorods. Crystal Research and Technology, Volume 43(12), pp. 1314–1317

Sholehah, A., Herman, A., Poespawati, N.R., Trenggono, A., Maulidiah, F., 2013. High Coverage ZnO Nanorods on ITO Substrates via Modified Chemical Bath Deposition (CBD) Method at Low Temperature. Advanced Materials Research, Volume 789, pp. 151–156

Tauc, J., Grigorovici, R., Vancu, A., 1966. Optical Properties and Electronic Structure of Amorphous Germanium. Physica Status Solidi (b), Volume 15(2), pp. 627–637

Venkateswarlu, K., Chandra-Bose, A., Rameshbabu, N., 2010. X-ray Peak Broadening Studies of Nanocrystalline Hydroxyapatite by Williamson–Hall Analysis. Physica B: Condensed Matter, Volume 405(20), pp. 4256–4261

Ye, N., Chen, C.C., 2012. Investigation of ZnO Nanorods Synthesized by a Solvothermal Method, using Al-doped ZnO Seed Films. Optical Materials, Volume 34(4), pp. 753–756

Yuwono, A.H., Munir, B., Ferdiansyah, A., Rahman, A., Handini, W., 2010. Dye Sensitized Solar Cell with Conventionally Annealed and Post-hydrothermally Treated Nanocrystalline Semiconductor Oxide TiO2 Derived from Sol Gel Process. Makara Journal Teknologi, Volume 14(2), pp. 53–60

Yuwono, A.H., Sholehah, A., Harjanto, S., Dhaneswara, D., Maulidiah, F., 2013. Optimizing the Nanostructural Characteristics of Chemical Bath Deposition Derived ZnO Nanorods by Post-hydrothermal Treatments. Advanced Materials Research, Volume 789, pp. 132–137