Effect of thermo-physical properties of Zn precursors on ZnO thin films grown by ultrasonic spray |
| |
| Affiliation: | 1. Laboratoire couches minces et interfaces, Département de Physique, Faculté de Sciences exactes,exactes, Université de Frères Mentouri, Constantine1, Algérie;2. Unité de recherche UROP, Setif, Algérie;3. Laboratoire couches minces et application université Mohammed Khaider, Biskra, Algérie;1. Physic Laboratory of Thin Films and Applications LPCMA, University of Biskra, Biskra, Algeria;2. Laboratoire de Couches Minces et Interfaces Faculté des Sciences Université de Constantine, Constantine, Algeria;1. Materials Science and Informatics Laboratory, Faculty of Science, University of Djelfa, 17000 Djelfa, Algeria;2. Laboratory of Materials Physics and Its Applications, University of M''sila, 28000 M''sila, Algeria;3. Laboratoire de Physique des couches minces et applications, University of Biskra, 7000 Biskra, Algeria;1. School of Metallurgy and Materials Engineering, College of Engineering, University of Tehran, Tehran, Iran;2. Centre of Excellence for High-Performance Materials, University of Tehran, Tehran, Iran;1. Physic Laboratory of Thin Films and Applications LPCMA, University of Biskra, Algeria;2. Laboratoire de Couches Minces et Interfaces Faculté des Sciences Université de Constantine, Algeria;3. Laboratoire de Photovoltaïque, Centre de Recherche et des Technologies de l’Energie, Technopole de Borj-Cédria, BP 95, 2050 Hammam-Lif, Tunisia;1. Department of Physics, Semnan University, Semnan, Iran;2. Photonics and Quantum Technologies Research School, NSTRI, 11155-3486 Tehran, Iran |
| |
| Abstract: | In the present work we have investigated temperature and precursor solution concentration influences on the density, viscosity and surface tension of zinc aqueous solutions. Three zinc salt solution sources, namely acetate, nitrate and chloride, have been investigated. The study was carried out at different concentrations ranged from 0.02 to 0.20 mol/l and solution temperatures varied from 20 to 60 °C. The measurements results show, for the whole studied salt sources, a linear increase in density, surface tension and viscosity with salt concentration. While an inverse behavior of these properties is observed with increasing solution temperature. Zinc acetate has the lower surface tension and viscosity, while zinc chloride has the largest ones. Droplets Weber, Reynolds numbers and surface enthalpy formation have been estimated from solution properties measurements. Ultimately a correlation between the used salts, concentrations and the obtained ZnO thin films morphologies and structures is addressed. Solution viscosity and surface tension are key parameters controlling the films growth and morphology. At fixed substrate temperature, films with smooth surface can be produced by reducing the surface tension and the viscosity of the starting solution. |
| |
| Keywords: | Spray pyrolysis Zinc aqueous solutions Thermophysical properties Thin films |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
