Open AccessPhysical Properties of Different Thicknesses ZnO Thin Films Prepared via Sol-gel Spin Coating Technique
Author(s) -
Rashidah Abdul Rahman,
Muhammad AlHadi Zulkefle,
Sukreen Hana Herman,
Rosalena Irma Alip
Publication year - 2021
Publication title -
scientific research journal/scientific research journal
Language(s) - English
Resource type - Journals
eISSN - 2289-649X
pISSN - 1675-7009
DOI - 10.24191/srj.v18i2.13035
Subject(s) - materials science , thin film , crystallite , spin coating , scanning electron microscope , deposition (geology) , profilometer , composite material , diffraction , field emission microscopy , coating , optics , nanotechnology , surface finish , metallurgy , paleontology , physics , sediment , biology
This paper presents the investigation of the thickness of the ZnO thin films by varying the number of deposition layers during the spin coating deposition process. ZnO thin films were deposited with a different number of layers (ranging from 1, 3, and 5), and the main purpose of this study is to explore the effect of the thickness on the properties of ZnO thin films. The deposited thin films were characterised using field emission scanning electron microscope, surface profilometer, and X-ray diffraction. From the characterisation results, the morphology of the ZnO thin films changed significantly with the number of layers and their thickness value. As expected, the thickness increased as the number of layers increased. The crystalline quality of the deposited film improved as the thickness increased. A change in crystallographic orientation was also observed in which the thicker, thin films showed crystal growth in the (102) direction, whereas the thinner one was in the (101) direction. A slight increase in crystallite size for dominant orientation also was observed with the increase of film thickness.