In this study, undoped semiconductor ZnO thin film and Bi-doped ZnO thin films were produced using the sol-gel spin coating method. By changing each parameter of the spin coating method, the best conditions for the formation of the film were determined via the trial and error method. When the appropriate parameter was found, the specified parameter was applied for each film. The structural, superficial, and optical properties of the films produced were characterized via atomic force microscope (AFM), UV-visible spectroscopy, and Fourier transform infrared (FTIR), and the effects of Bi dopant on these properties were investigated. When the morphological properties of the undoped and Bi-doped ZnO films were examined, it was observed that they had a structure in a micro-fiber shape consisting of nanoparticles. When the surface roughness was examined, it was observed that the surface roughness values became larger as the rate of Bi dopant increased. By examining the optical properties of the films, it was determined that they were direct band transition materials and Bi-doped thin films were involved in the semiconductor range. In addition, optical properties changed positively with Bi dopant. Since Bi-doped ZnO thin film has a wide bandgap and good optical properties, it is a material that can be used in optoelectronic applications.
About the authors
Tülay Yıldız was born in 1968 in Elazig. She completed her undergraduate studies at Firat University, Faculty of Engineering, Department of Mechanical Engineering in 1989. She completed her MSc at Firat University in the Metallurgy Education Department in 1994. She received her Ph.D. at Fırat University, Department of Metallurgy Education, in 1998. She has been an Associate Professor at the same university since 2015. Her research interests are manufacturing metallurgy, materials science, composite materials, powder metallurgy, surface modification.
Nida Kati, born 1988, completed her Undergraduate Degree at Elazig Firat University Technical Education Faculty in 2009. She completed her Ph.D. in the Department of Metallurgy at Firat University in 2014. She has been an Associate Professor at the same university since 2019. Her research interests are diffusion welding, solid-state welding, materials science, composite materials, powder metallurgy, surface modification, and nanomaterials.
Kadriye Yalçin was born in 1994 in Adana. She completed her Undergraduate Education at Fırat University Technology Faculty Metallurgy and Materials Engineering in 2017. She graduated from Fırat University, Institute of Science, Metallurgy and Materials Engineering Technologies Program in 2019.
This study was supported by the Fırat University Scientific Research Projects Unit (Project No: TEKF.18.26).
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