Research Information System
Thesis Type: Postgraduate
Institution Of The Thesis: Gazi University, Fen Bilimleri Enstitüsü, Turkey
Approval Date: 2020
Thesis Language: Turkish
Student: Ali Orkun ÇAĞIRTEKİN
Supervisor: SELİM ACAR
Open Archive Collection: AVESIS Open Access Collection
Abstract:This thesis study,Zn1-XSnXO (x=0, 0.05, 0.10, 0.15, 0.20) nanostructures have been grown through Successive Ionic Layer Adsorption and Reaction (SILAR) method. The structural, morphological and compositional properties of the nanostructures have been characterized through X-raydiffractometer (XRD), Scanning Electron Microscope (SEM) and Energy Dispersive X-ray analysis (EDAX), respectively. Temperature dependence of electrical resistance measurements of thin films were performed. Activation energies were calculated based on the doping ratio of the sensors. NO gas detection measurements were performed as a function of temperature and gas concentration, respectively. Then, NO gas detection properties under UV light were systematically examined. The sensitivity of the Zn0.90Sn0.10O sensor for 20 ppb NO gas at room temperature increased from 1.9% to 43%. In addition, impedance analyzes were performed at 257 C operating temperature in the presence of 25 ppm NO gas. The gas detection characteristics of the Zn0.90Sn0.10O sensor were found to be better than others. The effect of oxygen sensing and Sn doping on gas sensitivity of the produced sensors were discussed