ELECTRICAL PROPERTIES OF ZnO:TiO2 NANOCOMPOSITE THIN FILMS

Yıl 2021, Cilt: 7 Sayı: 2, 221 - 231, 31.12.2021

Serkan Uyar Burhan Coşkun Mümin Mehmet Koç Mustafa Erkovan

https://doi.org/10.34186/klujes.997005

Cited By: 3

Öz

In this work, ZnO:TiO2 nanocomposites thin films were produced, and electrical properties were evaluated. Nanocomposite nanoparticles were used as thin film source in the preparation which was produced using hydrothermal synthesis in different concentrations. Spin coating process was adopted in the preparation of ZnO:TiO2 nanocomposites films. In the thin film preparation pure TiO2,and nanocomposites in 1:5 ZnO:TiO2 and 1:2 ZnO:TiO2 concentrations were prepared. Electrical properties of the ZnO:TiO2 composites were assessed where capacitance – voltage and conductance – voltage measurements were performed. Adjusted conductance (Gadj) – voltage (V) and adjusted capacitance (Cadj) – voltage (V) characteristics were studied. Frequency dependent characteristics were obtained in the electrical measurements. The density of interface states (Dit) were assessed; results illustrated that the Dit has frequency dependent characteristics.

Anahtar Kelimeler

ZnO:TiO2 Nanocomposites, Thin films, Photodiodes, Photodetectors

Destekleyen Kurum

KLÜ

Proje Numarası

KLÜBAP 207 KLÜBAP 209

ZnO:TiO2 NANOKOMPOZİT İNCE FİLMLERİN ELEKTRİKSEL ÖZELLİKLERİ

Öz

Bu çalışmada, ZnO:TiO2 nanokompozit ince filmler üretildi ve bu filmlerin elektriksel özellikleri incelendi. Nano kompozitler üretilirken hidrotermal sentez yöntemi kullanıldı. Üretilen ZnO:TiO2 nano kompozitlerden filmler üretilirken spin kaplama metodu kullanıldı. Film hazırlık süresince katkısız TiO2 filmler, 1:5 ZnO:TiO2 ve 1:2 ZnO:TiO2 oranında nanokompozit filmler üretilmiştir. ZnO:TiO2 nano kompozitlerin elektriksel özellikleri kapasitans – voltaj ve kondüktans – voltaj grafikleri incelenerek elde edilmiştir. Elde edilen grafiklerden ayarlanmış kondüktans – voltaj ve ayarlanmış kapasitans voltaj grafikleri hesaplanmıştır. ZnO:TiO2 nanokompozit ince filmlerin frekansa bağımlı özellik gösterdiği anlaşılmıştır. Elektriksel karakteristikler kullanılarak ara yüz durum yoğunlukları hesap edilmiştir. Hesaplamalar sonucunda ara yüz durum yoğunluklarının da frekansa bağlı karakteristiğe sahip olduğu anlaşılmıştır

Anahtar Kelimeler

ZnO:TiO2, Nano kompozitler, İnce Filmler, Fotodedektörler, Fotodiyotlar

Proje Numarası

KLÜBAP 207 KLÜBAP 209

Kaynakça

• M. J. McNally, M. M. Koç, G. Torricelli, and K. Von Haeften, “Nanoscale stripe arrays templated on Moiré patterns in graphite,” Surf. Sci., vol. 646, no. April 2016, pp. 108–113, 201
• N. Kurnaz Yetim et al., “Structural, electrochemical and optical properties of hydrothermally synthesized transition metal oxide (Co3O4, NiO, CuO) nanoflowers,” J. Mater. Sci. Mater. Electron., vol. 31, no. 15, pp. 12238–12248, 2020.
• N. Kurnaz Yetim, N. Aslan, and M. M. Koç, “Structural and catalytic properties of Fe3O4 doped Bi2S3 novel magnetic nanocomposites: P-Nitrophenol case,” J. Environ. Chem. Eng., vol. 8, no. 5, p. 104258, 2020.
• N. Kurnaz Yetim, F. Kurşun Baysak, M. M. Koç, and D. Nartop, “Characterization of magnetic Fe3O4@SiO2 nanoparticles with fluorescent properties for potential multipurpose imaging and theranostic applications,” J. Mater. Sci. Mater. Electron., vol. 31, no. 20, pp. 18278–18288, 2020.
• S. Aktas, S. C. Thornton, C. Binns, and P. Denby, “Gas phase synthesis of core-shell Fe@FeO x magnetic nanoparticles into fluids,” J. Nanoparticle Res., vol. 118, p. 365, 2016.
• I. Khan, K. Saeed, and I. Khan, “Nanoparticles: Properties, applications and toxicities,” Arabian Journal of Chemistry, vol. 12, no. 7. Elsevier B.V., pp. 908–931, 01-Nov-2019.
• F. Qu, Y. Wang, J. Liu, S. Wen, Y. Chen, and S. Ruan, “Fe3O4-NiO core-shell composites: Hydrothermal synthesis and toluene sensing properties,” Mater. Lett., vol. 132, pp. 167–170, Oct. 2014.
• N. KURNAZ YETİM, “Hidrotermal olarak Sentezlenen Çiçek benzeri NiO@Fe3O4’ün Katalitik Özellikleri,” Düzce Üniversitesi Bilim ve Teknol. Derg., vol. 8, no. 3, pp. 1964–1974, Jul. 2020.
• N. Kurnaz Yetim, F. Kurşun Baysak, M. M. Koç, and D. Nartop, “Synthesis and characterization of Au and Bi2O3 decorated Fe3O4@PAMAM dendrimer nanocomposites for medical applications,” J. Nanostructure Chem., pp. 1–11, Feb. 2021.
• F. Kavousi, M. Goodarzi, D. Ghanbari, and K. Hedayati, “Synthesis and characterization of a magnetic polymer nanocomposite for the release of metoprolol and aspirin,” J. Mol. Struct., vol. 1183, pp. 324–330, May 2019.
• T. Endo, T. Yoshimura, and K. Esumi, “Synthesis and catalytic activity of gold-silver binary nanoparticles stabilized by PAMAM dendrimer,” J. Colloid Interface Sci., vol. 286, no. 2, pp. 602–609, Jun. 2005.
• H. Liu et al., “Facile formation of folic acid-modified dendrimer-stabilized gold–silver alloy nanoparticles for potential cellular computed tomography imaging applications,” Analyst, vol. 7, no. 138, pp. 1979–1987, 2013.
• K. Singh et al., “In situ green synthesis of Au/Ag nanostructures on a metal-organic framework surface for photocatalytic reduction of p-nitrophenol,” J. Ind. Eng. Chem., vol. 81, pp. 196–205, Jan. 2020.
• K. Lamei, H. Eshghi, M. Bakavoli, S. A. Rounaghi, and E. Esmaeili, “Carbon coated copper nanostructures as a green and ligand free nanocatalyst for Suzuki cross-coupling reaction,” Catal. Commun., vol. 92, pp. 40–45, Mar. 2017.
• C. Hariharan, “Photocatalytic degradation of organic contaminants in water by ZnO nanoparticles: Revisited,” Appl. Catal. A Gen., vol. 304, no. 1–2, pp. 55–61, May 2006.
• N. Aslan et al., “Ti doped amorphous carbon (Al/Ti-a:C/p-Si/Al) photodiodes for optoelectronic applications,” J. Mol. Struct., vol. 1155, pp. 813–818, 2018.
• Referans17 M. M. Koc, “Photoelectrical properties of solar sensitive CuO doped carbon photodiodes,” J. Mol. Struct., vol. 1208, p. 127872, May 2020.
• B. Coşkun et al., “Optoelectrical properties of Al/p-Si/Fe:N doped ZnO/Al diodes,” Thin Solid Films, vol. 653, pp. 236–248, May 2018.
• S. Özden and M. M. Koç, “Wet-chemical etching of GaAs(211)B wafers for controlling the surface properties,” Int. J. Surf. Sci. Eng., vol. 13, p. 79, 2019.
• E. H. Nicollian and A. Goetzberger, “The Si-SiO2 Interface - Electrical Properties as Determined by the Metal-Insulator-Silicon Conductance Technique,” Bell Syst. Tech. J., vol. 46, no. 6, pp. 1055–1133, Jul. 1967.
• F. Yakuphanoglu and W. Aslam Farooq, “Photoresponse and electrical characterization of photodiode based nanofibers ZnO and Si,” Mater. Sci. Semicond. Process., vol. 14, no. 3–4, pp. 207–211, Sep. 2011.
• S. UYAR, B. COŞKUN, M. İLHAN, and M. M. KOC, “Optoelectronic Properties of ZnO:TiO2 Nanocomposite Thin Films,” J. Mater. Electron. DEVICES, vol. 5, no. 1, pp. 21–27, Sep. 2021.