Browsing by Author "Kurnaz, S"
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Web of Science A detailed research for determination of Er/Gd co-doping effect in ZnO-NPs thin films on optical, electrical and crystallographic properties(2023.01.01) Tokeser, EA; Ozturk, O; Kurnaz, S; Cicek, C; Seydioglu, TWeb of Science Assessment of superconducting and structural stability of advanced Y-123 and Y-358 ceramics with Tb/Y substitution in main matrices(2024.01.01) Güdücü, G; Öztürk,Ö; Kurnaz, S; Tokeser, EA; Safran, S; Yildirim, GWeb of Science Comparative investigation on electronic properties of metal-semiconductor structures with variable ZnO thin film thickness for sensor applications(2019.01.01) Cicek, O; Kurnaz, S; Bekar, A; Ozturk, OWeb of Science Comparison of the Dopant Effect and Sample Preparation Method on Y-123 Superconductors(2021.01.01) Ozturk, O; Nefrow, ARA; Bulut, F; Kurnaz, S; Safran, SWeb of Science Effect of foreign impurity and growth temperatures on hexagonal structure and fundamental properties of ZnO nanorods(2024.01.01) Seydioglu, T; Kurnaz, S; Tokeser, EA; Yildirim, G; Ozturk, OPubmed Effect of foreign impurity and growth temperatures on hexagonal structure and fundamental properties of ZnO nanorods.(2024-06-27) Seydioglu, T; Kurnaz, S; Tokeşer, E Aşıkuzun; Yildirim, G; Ozturk, OThis study examined the influence of growth temperature and dopant concentration on the properties of Gd- and Ni-doped zinc oxide nanorods (ZnO NRs). ZnO seed layers were deposited on glass substrates using a sol-gel and dip-coating approach. Gd- and Ni-doped ZnO NRs were hydrothermally grown on the seed layers at different temperatures such as 75, 90, and 105°C for a constant growth time of 5 h. The crystal structure, optical, surface morphology views, and electrical properties of the NRs were extensively investigated by x-ray diffraction (XRD), scanning electron microscopy (SEM), UV-visible spectroscopy, and four probe experimental methods. The XRD analysis confirmed the successful substitution of Zn ions by Gd and Ni within the ZnO main matrices. The reordering of hexagonal structures with varied electronegativity, ionic radius dimensions, and valence electron states of Gd and Ni dopants affected seriously the fundamental characteristic features of NRs. The SEM images showed that the ZnO NRs grown at 90°C possessed a more favorable surface morphology and well-defined hexagonal shape compared with those grown at other growth temperatures. Higher dopant concentration led to an increase in NR diameter but a decrease in density depending on the increase in the space between the NRs. Additionally, the optical transmittance was found to generally enhance with increasing dopant concentration. The results obtained highlighted the interplay between growth temperature, dopant type and concentration in tailoring the structural, morphological, and optical properties of Gd- and Ni-doped ZnO NRs, paving the way for the development of optimized nanomaterials for various applications. RESEARCH HIGHLIGHTS: The XRD analysis confirmed the successful substitution of Zn ions by Gd and Ni within the ZnO main matrices. The SEM images showed that the ZnO NRs grown at 90°C possessed a more favorable surface morphology and well-defined hexagonal shape compared with those grown at other growth temperatures. The optical transmittance was found to generally enhance with increasing dopant concentration. The results obtained highlighted the interplay between growth temperature, dopant type and concentration in tailoring the structural, morphological, and optical properties of Gd- and Ni-doped ZnO NRs, paving the way for the development of optimized nanomaterials for various applications.Web of Science Self-powered visible-UV light photodiodes based on ZnO nanorods-silicon heterojunctions with surface modification and structural enhancement(2022.01.01) Cicek, O; Karasueleymanoglu, M; Kurnaz, S; Oztuerk, O; Tasci, ATWeb of Science Solar light performances of n-ZnO nanorods/p-Si-based photodetectors under high illumination intensity(2022.01.01) Ozturk, O; Candan, BM; Kurnaz, S; Cicek, O; Tasci, ATWeb of Science The Parylene C as a Flexible Substrate and Passivation Layer: A Promising Candidate for a Piezoelectric, Piezoresistive, and Capacitive Pressure Sensor in Low-Pressure Range(2023.01.01) Kurnaz, S; Özturk, Ö; Yilmaz, N; Çiçek, O