Master'sOpen Access

Evaluation of characterization of ZnFeO compounds synthesis in different production conditions

2019
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Advisor: Doç. Dr. Gülten Kavak

Abstract (EN)

Zinc oxide (ZnO) semiconductor materials having a high excitatory bonding energy of 60 MeV and a wide band range of 3.37 eV have an important place in the literature for the device applications we call optoelectronics. Due to these superior electrical / optical properties, ZnO is used in many applications such as photodetectors, laser diodes and LEDs. Various techniques such as sol-gel, spray pyrolysis, evaporation, atomic layer deposition, spin coating and spraying are used to produce ZnO thin films. In this review, the magnetic properties of ZnFeO nanoparticles, which were prepared by sol-gel method, annealed at temperatures of 400, 450, 500, 550 and 600 oC, using scanning electron microscopy (SEM) and X-ray diffraction (XRD), were discussed in light of recent developments. The effects of optical, structural and surface films of thin films prepared in different ratios of ZnO with and without doped were determined and interpreted. From the X-ray diffraction pattern results, it was observed that the quality of the crystal formed by Fe addition decreased. In addition, atomic force microscopy (AFM) measurements and surface roughness and surface morphology of ZnO thin films were investigated. It is seen that the surface of the films has a uniform, ie homogeneous distribution and the tendency to decrease in the size of the particles with the increased Fe addition. It is seen that the forbidden energy values in the range of 10-320 K are calculated as a function of temperature in 10K steps. In addition, it was observed that ultraviolet and visible light (UV-Vis) absorption spectroscopy measurements showed that the forbidden energy range decreased with increasing Fe contribution. In addition, the measurements of temperature by magnetization due to magnetic field were investigated with vibrating sample magnetometer (VSM). Besides, the results of cooling measurement in zero magnetic field, which is the function of temperature, are interpreted according to particle size and particle morphology.

Author

İbrahim Polat Kölük

How to Cite

İbrahim Polat Kölük (Master Thesis). Evaluation of characterization of ZnFeO compounds synthesis in different production conditions, 2019, Dicle University.

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