The synthesis and opto-electrical chracteristics of Cadmium doped Tin oxide thin films by the Sol-Gel method

Abstract

In this study, undoped and Cd doped SnO thin films at different atomic rates (0, 2, 4 and 6%) were synthesized by the Sol-Gel method. The changes in the opto-electrical properties of the samples produced with Cd dopant were investigated by means of the UV-VIS-NIR spectroscopy. The effect of Cd doping on the optical properties of SnO films was investigated by spectrophotometric measurements. Optical constants (refractive index, n, and absorption index, k) of the samples were obtained in the wavelength range of 300-800 nm. Dispersion parameters were determined and discussed according to the single oscillator model. The optical band gaps of the samples were calculated using Tuac equation. It was observed that Eg values of the samples increased from 3.57eV to 3.60 eV depending on the Cd dopant. As a result of the investigations, it was determined that Cd doping has significant effects on the optical properties of SnO films and the produced samples can be used in transparent conductive electrode applications, optoelectronic devices, and sensor production.

Keywords

• Cd doped Tin-oxide,sol-gel,spin coating,optical properties,band gap

References

1. [1] . C. Aydın, Synthesis of SnO2:rGO nanocomposites by the microwave-assisted hydrothermal method and change of the morphology, structural, optical and electrical properties, Journal of Alloys and Compounds, 771 (2019) 964-972.
2. [2] . C. Aydin, The functionalization of morphological, structural and optical properties of Fe doped SnO2 nanocrystals synthesized by the sol–gel method, Journal of Materials Science: Materials in Electronics, 29 (2018) 20087-20096.
3. [3] . C. Aydin, Tin Oxide Based Nano Electroceramics Obtained from Sol-Gel Process: The Modified of the Structural and Opto-Electrical Properties with the Al Doping, Journal of Nanoelectronics and Optoelectronics, 13 (2018) 1460-1467.
4. [4] . H. Aydin, H.M. El-Nasser, C. Aydin, A.A. Al-Ghamdi, F. Yakuphanoglu, Synthesis and characterization of nanostructured undoped and Sn-doped ZnO thin films via sol-gel approach, Applied Surface Science, 350 (2015) 109-114.
5. [5] . M. Benhaliliba, C.E. Benouis, F. Yakuphanoglu, A. Tiburcio-Silver, C. Aydin, S. Hamzaoui, Z. Mouffak, Detailed investigation of submicrometer-sized grains of chemically sprayed (Sn1−xAlx, O2) (0≤x≤0.085) thin films, Journal of Alloys and Compounds, 527 (2012) 40-47.
6. [6] . C. Aydin, Synthesis of Pd:ZnO nanofibers and their optical characterization dependent on modified morphological properties, Journal of Alloys and Compounds, 777 (2019) 145-151.
7. [7] . C. Aydin, N.M. Khusayfan, A.A. Al-Ghamdi, F. El-Tantawy, W.A. Farooq, F. Yakuphanoglu, Facile synthesis, electrical and optical properties of Cu-doped GaN nanorods by sol-gel technique, Journal of Sol-Gel Science and Technology, 78 (2016) 68-75.
8. [8] . A. Orhan, C. Aydin, H. Aydin, A.A. Al-Ghamdi, F. El-Tantawy, F. Yakuphanoglu, Synthesis and optical properties of iron doped gallium nitride nanostructures by sol gel method, Microsystem Technologies-Micro-and Nanosystems-Information Storage and Processing Systems, 21 (2015) 1219-1224.

9. [9] . H. Aydin, Electrical and Optical Properties of Titanium Dioxide-Carbon Nanotube Nanocomposites, Journal of Nanoelectronics and Optoelectronics, 9 (2014) 608-613.
10. [10] . H. Aydin, C. Aydin, A.A. Al-Ghamdi, W.A. Farooq, F. Yakuphanoglu, Refractive index dispersion properties of Cr-doped ZnO thin films by sol-gel spin coating method, Optik, 127 (2016) 1879-1883.
11. [11] . M. Soylu, H. Aydin, A.A. Al-Ghamdi, W.A. Farooq, F. Yakuphanoglu, Study of optical and electrical assessments of the quaternary MgZnSnO system containing different Mg content, Journal of Materials Science: Materials in Electronics, 25 (2014) 4235-4245.
12. [12] . C. Aydın, M.S. Abd El-sadek, K. Zheng, I.S. Yahia, F. Yakuphanoglu, Synthesis, diffused reflectance and electrical properties of nanocrystalline Fe-doped ZnO via sol–gel calcination technique, Optics & Laser Technology, 48 (2013) 447-452.
13. [13] . C. Aydın, M. Benhaliliba, A.A. Al-Ghamdi, Z.H. Gafer, F. El-Tantawy, F. Yakuphanoglu, Determination of optical band gap of ZnO:ZnAl2O4 composite semiconductor nanopowder materials by optical reflectance method, Journal of Electroceramics, 31 (2013) 265-270.
14. [14] . H. Aydın, F. Yakuphanoglu, C. Aydın, Al-doped ZnO as a multifunctional nanomaterial: Structural, morphological, optical and low-temperature gas sensing properties, Journal of Alloys and Compounds, 773 (2019) 802-811.
15. [15] . C. Aydın, O.A. Al-Hartomy, A.A. Al-Ghamdi, F. Al-Hazmi, I.S. Yahia, F. El-Tantawy, F. Yakuphanoglu, Controlling of crystal size and optical band gap of CdO nanopowder semiconductors by low and high Fe contents, Journal of Electroceramics, 29 (2012) 155-162.
16. [16] . C. Aydın, S.A. Mansour, Z.A. Alahmed, F. Yakuphanoglu, Structural and optical characterization of sol–gel derived boron doped Fe2O3 nanostructured films, Journal of Sol-Gel Science and Technology, 62 (2012) 397-403.
17. [17] . H. Aydin, B. Gündüz, C. Aydin, Surface morphology, spectroscopy, optical and conductivity properties of transparent poly(9-vinylcarbazole) thin films modified with graphene oxide, Synthetic Metals, 252 (2019) 1-7.
18. [18] . C. Aydin, H. Aydin, M. Taskin, F. Yakuphanoglu, A Novel Study: The Effect of Graphene Oxide on the Morphology, Crystal Structure, Optical and Electrical Properties of Lanthanum Ferrite Based Nano Electroceramics Synthesized by Hydrothermal Method, Journal of Nanoscience and Nanotechnology, 19 (2019) 2547-2555.
19. [19] . C. Aydın, Variation of structural and electrical properties of gallium nitride-based nanomaterials with nickel dopant at different atomic ratios, Ceramics International, 44 (2018) 17473-17478.
20. [20] . H. Aydin, A. Tataroglu, A.A. Al-Ghamdi, F. Yakuphanoglu, F. El-Tantawy, W.A. Farooq, A novel type heterojunction photodiodes formed junctions of Au/LiZnSnO and LiZnSnO/p-Si in series, Journal of Alloys and Compounds, 625 (2015) 18-25.
21. [21] . H. Aydin, S.A. Mansour, C. Aydin, A.A. Al-Ghamdi, O.A. Al-Hartomy, F. El-Tantawy, F. Yakuphanoglu, Optical properties of nanostructure boron doped NiO thin films, Journal of Sol-Gel Science and Technology, 64 (2012) 728-733.
22. [22] . O. Guler, S.H. Guler, F. Yo, H. Aydin, C. Aydin, F. El-Tantawy, E.M. Duraia, A.N. Fouda, Electrical and Optical Properties of Carbon Nanotube Hybrid Zinc Oxide Nanocomposites Prepared by Ball Mill Technique, Fullerenes Nanotubes and Carbon Nanostructures, 23 (2015) 865-869.