Potasyum Katkılamanın Ag:ZnO Filmlerinin Yapısal Özellikleri Üzerine Etkisinin İncelenmesi

Bu çalışmada, Ag:ZnO ve Ag-K:ZnO filmleri basit ve efektif bir üretim tekniği olan kimyasal banyolama tekniği ile ZnO gövde tabakalar üzerine sentezlenmiştir.Filmlerin yapısal özelliklerinin detaylı şekilde incelenmesinin yanı sıra yüzey pürüzlülük değerleri hesaplanmış ve örneklerin Raman spektrumu incelenmiştir. Tüm filmler hekzagonal würtzite ZnO kristal yapısına sahiptir. Ag katkılaması ile tane büyüklüğü µm mertebesinden 36 nm’ye azalmış ve ZnO kristalleşmesi iyileşmiştir. Buna karşın, K+ iyonlarının yapıya girmesiyle tane büyüklüğü nispeten azalmasına karşın (32 nm) ZnO kristalleşmesi ciddi biçimde bozunmuştur. Yüzeyde nanoparçacıkların oluşumuna ve yüzey pürüzlülük değerlerinde azalmaya potasyum katkılamanın etkisi olduğu gözlenmiştir. Numunelerde gözlenen farklı şiddette tüm zirveler, ZnO würtzite yapısının Raman modlarından bazıları ile eşleşme göstermiştir. Elde edilen sonuçlardan, gerek tekil (Ag) gerek ise ikili (Ag-K) katkılamayla beraber, ZnO yapısındaki kusur yoğunluklarının artması ve değişmesi nedeniyle, kristal yapı ve yüzey dağılımında bozulma meydana geldiği düşünülmektedir. Ancak potasyum atomlarının Ag:ZnO yapısına girmesi ile fiziksel ve kimyasal özellikler üzerinde iyileştirici etkisi saptanmıştır.

Investigation of Potassium Doping Effect on the Structural Properties of Ag:ZnO Films

In this study, Ag:ZnO and Ag-K:ZnO films were synthesized on ZnO body layers by chemical bath technique, which can be defined as a simple and effective production method. In addition to investigation of the structural properties of the films in detail, the surface roughness values were also calculated and the Raman spectrum of the samples was determined. All films had a hexagonal würtzite ZnO crystal structure.The grain size decreased from one µm to 36 nm by adding Ag ions. ZnO crystallization was also improved. However, the crystallization of ZnO was severely impaired due to the adding K+ ions into the structure which reduced the grain size to 32 nm. It has been observed that potassium doping has an effect on the formation of nanoparticles on the surface and the decrease in surface roughness values. In the samples, different peaks were observed and some of the Raman modes were matched in the ZnO würtzite structure. It can be concluded that the crystal structure and surface distribution deteriorated due to the the changes in the ZnO structure, together with both single (Ag) and double (Ag-K) doping technique. However, it was determined that the potassium atoms had a healing effect on the physical and chemical properties in the Ag:ZnO structure.

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Ali M., Farooq S., Baig W., Shar M., 2016, Structural and optical properties of pure and Ag doped ZnO thin films obtained by sol gel spin coating technique. Materials Science-Poland, 33, 601-605. Ali, N., A. R., V., Khan, Z.A., 2019. Ferromagnetism from non-magnetic ions: Ag-doped ZnO. Sci Rep.,9, 20039.
Bilgili O., 2019. The Effects of Mn Doping on the Structural and Optical Properties of ZnO, Acta Physica Polonica A, 136, 3.
Chavha K., Kang M., 2017. Improving the photovoltaic conversion efficiency of ZnO based dye sensitized solar cells by indium doping. Journal of Alloys and Compounds, 692, 67-76.
Chen Y., Xu X. L., Zhang G. H., Xue H., Ma S.Y., 2009, A comparative study of the microstructures and optical properties of Cu- and Ag-doped ZnO thin films, Physica B: Condensed Matter, 404, 3645-3649.
Cheng P., Ping W., Hua C., Yang Y., 2018. The Impact of Iron Adsorption on the Electronic and Photocatalytic Properties of the Zinc Oxide (0001) Surface: A First-Principles Study, Materials, 11, 417.
Coşkun B., 2020. Investigation of dielectric properties of Ag-doped ZnO thin films. Journal of Molecular Structure, 1209, 127970.
Devi K. R., Selvan G., Karunakaran M., Kasirajan K. et al., 2020. A SILAR fabrication of nanostructured ZnO thin films and their characterizations for gas sensing applications: An effect of Ag concentration. Superlattices and Microstructures, 143, 106547.
Gavathri S., Ghosh N., Siyaraman O., Sathiskumar S., 2015. Investigation of physicochemical properties of Ag doped ZnO nanoparticles prepared by chemical route, Applied Science Letters, 1, 8.
Göktaş A., Modanlı S., Tumbul A., Kılıç A., 2022. Facile synthesis and characterization of ZnO, ZnO:Co, and ZnO/ZnO:Co nano rod-like homojunction thin films: Role of crystallite/grain size and microstrain in photocatalytic performance. Journal of Alloys and Compounds, 893, 162334.
Gruzintsev A.N., Volkov V.T., Yakimov E.E., 2003. Photoelectric properties of ZnO films doped with Cu and Ag acceptor impurities. Semiconductors, 37, 259-262.
Guan, S., Wang, L., Tamamoto, Y. et al., 2021. Fabrication and characterization of potassium- doped ZnO thin films. Journal of Mater Science: Materials in Electronics, 32, 669–675.
Ji K., Kim Y., Jae-Young L., Park H., Kim S., Kim J., Kim J., 2014. K-doping effects on the characteristics of ZnO thin films synthesized by using a spin-coating method. Journal of the Korean Physical Society, 64, 1581–1585.
Kamış H., Karakuş N. D., Taymaz B. H., 2019, Electrochemical Production of ZnO and ZnO@Ag Core-Shell Nanorods on ITO Substrate and Their Photocatalytic and Photoelectrochemical Performance, Bilge International Journal of Science and Technology Research, 3, 161-177.
Katı N., 2019. Investigation of Optical and Morphological Properties of Co Doped ZnO Nanomaterials, Turkish Journal of Science & Technology, 14, 41-48.
Kuriakose S., Satpatib B., Mohapatra S., 2015. Highly efficient photocatalytic degradation of organic dyes by Cu doped ZnO nanostructures, Physical Chemistry Chemistry Physics., 17, 25172- 25181.
Lee E. C., Chang K.J., 2006. p-type doping with group-I elements and hydrogenation effect in ZnO. Physica B: Condensed Matter, 376, 707-710.
Li, J. Li W., Gu J., Zhong Z., Yang C., Hou J., Tao H., Du J., Li X., Xu L., Wan S., Long H., Wan H., 2020. Carrier transport improvement in ZnO/MgZnO multiple-quantum-well ultraviolet light-emitting diodes by energy band modification on MgZnO barriers. Optics Communications, 459, 124978.
Liu, F.C., Li, J.Y., Chen, T.H., Chang, C.H., Lee, C.T., et al., 2017. Effect of Silver Dopants on the ZnO Thin Films Prepared by a Radio Frequency Magnetron Co-Sputtering System, Materials, 10, 797.
Mahardika T., Putri N. A., Putri A. E., Fauzia V., et al., 2019. Rapid and low temperature synthesis of Ag nanoparticles on the ZnO nanorods for photocatalytic activity improvement, Results in Physics, 13, 102209.
Min, J. H., Liang, X. Y., Wang, B., Zhao, Y., et al., 2011. Characterization of Ag Doped P-Type ZnO Thin Films Prepared by Electrostatic-Enhanced Ultrasonic Spray Pyrolysis. Advanced Materials Research, 299, 436–439.
Özütok, F., Demiri S., 2017. Nanoflower-Like ZnO Fılms Prepared By Modified Chemical Bath Deposition: Synthesis, Optical Properties and NO2 Gas Sensing Mechanism. Digest Journal of Nanomaterials and Biostructures, 12, 309-317.
Parra M. R., Haque F. Z., 2014. Aqueous chemical route synthesis and the effect of calcination temperature on the structural and optical properties of ZnO nanoparticles, Journal of Materials Research and Technology, 3, 363-369.
Sellaiyan, S., Uedono, A., Devi, L.V. et al. 2019. Er3+ induced point defects in ZnO and impact of Li+/Na+/K+ on the vacancy defects in ZnO:Er studied by positron annihilation spectroscopy. Applied Physics A, 125, 497. Sutanto H., Wibowo S., Nurhasanah L., Hidayanto E., Hadiyanto H., 2016. Ag Doped ZnO Thin Films Synthesized by Spray Coating Technique for Methylene Blue Photodegradation under UV Irradiation. Hindawi Publishing Corporation International Journal of Chemical Engineering, Article ID 6195326, 6 pages.
Tripathi A., Misra K. P., Shukla R.K., 2014. UV enhancement in polycrystalline Ag-doped ZnO films deposited by the sol–gel method, Journal of Luminescence, 149, 361-368.
Tumbul A., Aslan F., Demirozu S., Göktaş A., Kılıç A., Durgun A., Zarbali M.Z., 2022. Solution processed boron doped ZnO thin films: influence of different boron complexes, Materials Research Express, 6, 035903.
Wang Y., Tang W., Zhang L., 2015. Crystalline Size Effects on Texture Coefficient, Electrical and Optical Properties of Sputter-deposited Ga-doped ZnO Thin Films, Journal of Materials Science & Technology, 31, 175-181.
Yang S., Liu Y., Zhang Y., and Mo D., 2010. Investigation of annealing-treatment on structural and optical properties of sol–gel-derived zinc oxide thin films. Bull. Mater. Sci., 33, 209–214.
Xu H. Y., Chen C., Xu L., Dong J. K., 2013. Direct growth and shape control of Cu2O film via one- step chemical bath deposition, Thin Solid Films, 527,76-80.
Xu K., Li D., Yuan Y., Xu J., Wang H., Wang L., Lu Z., Liu L., Lin Z., Zhang X., 2020. Facilely Solution-Processed ZnO + Cs2CO3 for Robust Electron Injection in Ultraviolet Organic Light-Emitting Diode with Inverted Architecture. Optics & Laser Technology, 131, 106419.
Xu L., Miao J., Chen Y., Su J., Yang M., Zhang L., Lan Zhao, Shuchen Ding, 2018.Characterization of Ag-doped ZnO thin film for its potential applications in optoelectronic devices, Optik, 170, 484-491.