1 Ocak 2021 Dergi makalesi Açık Erişim

Er, Irmak Karaduman; Cagirtekin, Ali Orkun; Ajjaq, Ahmad; Yildirim, Memet Ali; Ates, Aytunc; Acar, Selim

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    <subfield code="a">Complex electrical impedance and modulus characterizations of ZnO:Sn thin films in a wide temperature range</subfield>
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    <subfield code="a">In this study, pure zinc oxide (ZnO) and tin-doped zinc oxide (Zn1-xSnxO) thin films were synthesized using successive ionic layer adsorption and reaction (SILAR) method in 40 cycles with doping ratios x = 0.05, 0.10, 0.15, and 0.20. Subsequently, structural, optical, and electrical characteristics of all synthesized thin films were properly investigated by the appropriate techniques. For structural characterizations, X-ray diffraction (XRD) technique was employed, and the data demonstrated the appropriate hexagonal wurtzite structure of the synthesized thin films and predicted the decrease of crystallite size with Sn doping. Likewise, optical characterizations were carried out through ultraviolet-visible (UV-Vis) technique, and the data showed good transparency of ZnO thin film and confirmed the increase in transparency and bandgap upon Sn doping. Additionally, to probe the electrical aspects of the synthesized thin films, impedance, modulus, and conductivity analyses were carried out as a function of frequency in a wide temperature range (450-750 K). The results demonstrated the critical effect of temperature and Sn doping ratio in ZnO thin films. At high enough temperatures, inductive effects became evident in the low-frequency region of all the thin films. And at all temperatures, 5 wt%- and 10 wt%-doped films exhibited extreme responses in the investigated doping range, where the former and the latter showed, respectively, highest and lowest conductivity as well as lowest and highest possibility of grain effects in the film structure. This behavior was confirmed using two different analysis techniques with two separate data sets, (Z, theta) and (C, G).</subfield>
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    <subfield code="u">Gazi Univ, Fac Sci, Dept Phys, TR-06560 Ankara, Turkey</subfield>
    <subfield code="a">Cagirtekin, Ali Orkun</subfield>
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    <subfield code="u">Erzincan Binali Yildirim Univ, Engn Fac, Dept Elect &amp; Elect Engn, TR-24100 Erzincan, Turkey</subfield>
    <subfield code="a">Yildirim, Memet Ali</subfield>
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    <subfield code="a">Ates, Aytunc</subfield>
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    <subfield code="u">Cankiri Karatekin Univ, Eldivan Med Serv Vocat Sch, Dept Med Serv &amp; Tech, TR-18700 Cankiri, Turkey</subfield>
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