STRUCTURAL AND OPTICAL PROPERTIES OF UNDOPED AND SILVER, LITHIUM AND COBALT-DOPED ZnO THIN FILMS

Fatma Meydaneri̇ Tezel and İ. Afşin Kari̇per
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Fatma Meydaneri̇ Tezel: Metallurgy and Material Engineering Department, Faculty of Engineering, Karabük University, 78050 Karabük, Turkey
İ. Afşin Kari̇per: #x2020;Science Education Department, Faculty of Education, Erciyes University, 38039 Kayseri, Turkey‡Erciyes Teknopark, Building No. 1, No. 41, 38039 Kayseri, Turkey

Surface Review and Letters (SRL), 2020, vol. 27, issue 04, 1-7

Abstract: Undoped and silver, lithium and cobalt-doped ZnO thin films have been successfully deposited on glass by chemical bath deposition (CBD). The reaction temperature was 50∘C and the films were annealed at 400∘C for 4h in a high temperature furnace. UV/VIS spectrum was used to determine optical transmittance, optical band gap (Eg) and absorbance values of Ag:ZnO, Co:ZnO, Li:ZnO and undoped ZnO thin films. Optical band gap (Eg) and absorbance values of undoped ZnO, Ag:ZnO, Co:ZnO and Li:ZnO thin films were found as 0.0158, 0.0064, 0.2638, 0.0956 and 3.24, 3.13, 3.27, 2.96 eV, respectively. Extinction coefficients and refraction indexes of the films were found to be 0.0096, 0.0038, 0.0068, 0.019 (extinction coefficient) and 1.26, 1.14, 1.66, 2.33 (refraction index), respectively. X-ray patterns of undoped ZnO, Ag:ZnO, Co:ZnO and Li:ZnO thin films were confirmed as amorphous.

Keywords: ZnO; thin films; XRD; optical spectroscopy; Egap (search for similar items in EconPapers)
Date: 2020
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DOI: 10.1142/S0218625X19501385

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