The Structural, Optical, Photoluminescence and Transport Properties of Zn: CuO Heterostructures

Öz

In this study, pure and Zn-doped CuO (denoted by Zn:CuO) heterostructures have been grown on glass substrates using the sol-gel method. The effect of zinc concentration on structural, optical and electrical properties of thin films has been analyzed. The X-ray diffraction (XRD) analysis and field emission scanning electron microscopy (FE-SEM) have been used to investigate the composition and the morphology of the films. Optical properties have been characterized by UV–Visible (UV–Vis) and Photoluminescence (PL) spectroscopy measurements. The optical band gap energies have been found to be dependent on Zn doping. Consequently, it is observed that Zn doping have strong effect on microstructure, optical and electrical properties of copper oxide thin films.

Anahtar Kelimeler

• Zn:CuO semiconductor thin film
• Heterostructure
• Transport

Zn:CuO Heteroyapıların Yapısal, Optik, Fotolüminesans ve İletim Özellikleri

Öz

Bu çalışmada, sol-jel yöntemi kullanılarak cam alt tabakalar üzerinde katkısız ve Zn katkılı CuO (Zn:CuO ile belirtilmiştir) heteroyapılar büyütüldü. Çinko konsantrasyonunun, ince filmlerin yapısal, optik ve elektriksel özellikleri üzerindeki etkisi analiz edildi. Filmlerin kompozisyonu ve morfolojisini araştırmak için X ışını kırınımı (XRD) analizi ve Alan-emisyon taramalı elektron mikroskobu (FE-SEM) kullanıldı. Optik özellikler UV-Görünür bölge (UV-Vis) ve Fotoluminesans (PL) spektroskopisi ölçümleriyle tanımlandı. Optik bant aralığı enerjilerinin Zn katkılamasına bağlı olduğu bulundu. Sonuçlar, Zn katkılamanın CuO filmlerin yapısal, elektriksel ve optik özelliklerini güçlü bir şekilde etkilediğini gösterdi. 

Anahtar Kelimeler

• Zn:CuO yarıiletken ince film
• Heteroyapı
• iletim

Kaynakça

1. [1] Rahnama, A., Gharagozlou, M. , “Preparation and Properties of Semiconductor CuO Nanoparticles via a Simple Precipitation Method at Different Reaction Temperatures” Optical and Quantum Electronics, 44, 313–322, 2012.[2] Mote, V. D., Dargad, J. S., Purushotham, Y., Dole, B. N., “Effect of Doping on Structural, Physical, Morphological and Optical Properties of Zn1−xMnxO Nano-Particles” Ceramics International, 41, 15153–15161, 2015.[3] Na, H. G., Kwak, D. S., Kim, H. W., “Structural, Raman, and Photoluminescence Properties of Double-Shelled Coaxial Nanocables of In2O3 Core with ZnO and AZO Shells” Crystal Research and Technology, 47, 79–86, 2012.[4] Chen, L.-C., Huang, C.-M., Gao, C.-S., Wang, G.-W., Hsiao, M.-C., “A Comparative Study of the Effects of In2O3 and SnO2 Modification on the Photocatalytic Activity and Characteristics of TiO2” Chemical Engineering Journal, 175, 49–55, 2011.[5] Lu, H.-C., Chu, C.-L., Lai, C.-Y., Wang, Y.-H., “Property Variations of Direct-Current Reactive Magnetron Sputtered Copper Oxide Thin Films Deposited at Different Oxygen Partial Pressures” Thin Solid Films, 517, 4408–4412, 2009.[6] Solanki, P. R., Kaushik, A., Agrawal, V. V., Malhotra, B. D., “Nanostructured Metal Oxide-Based Biosensors” NPG Asia Materials, 3, 17–24, 2011.[7] Cruccolini, A., “Gas Adsorption Effects on Surface Conductivity of Nonstoichiometric CuO” Sensors and Actuators B: Chemical, 98, 227–232, 2004.[8] Ray, S. C., “Preparation of Copper Oxide Thin Film by the Sol–gel-like Dip Technique and Study of Their Structural and Optical Properties” Solar Energy Materials and Solar Cells, 68, 307–312, 2001.[9] Li, Y., Liang, J., Tao, Z., Chen, J., “CuO Particles and Plates: Synthesis and Gas-Sensor Application” Materials Research Bulletin, 43, 2380–2385, 2008.[10] Ogwu, A. A., Darma, T. H., Bouquerel, E., “Electrical Resistivity of Copper Oxide Thin Films Prepared by Reactive Magnetron Sputtering” Journal of Achievements in Materials and Manufacturing Engineering, 24, 172–177, 2007.[11] Ottosson, M., Carlsson, J.-O., “Chemical Vapour Deposition of Cu2O and CuO from CuI and O2 or N2O” Surface and Coatings Technology, 78, 263–273, 1996.[12] Kawaguchi, K., Kita, R., Nishiyama, M., Morishita, T., “Molecular Beam Epitaxy Growth of CuO and Cu2O Films with Controlling the Oxygen Content by the Flux Ratio of Cu/O+” Journal of Crystal Growth, 143, 221–226, 1994.[13] Morales, J., Sánchez, L., Martín, F., Ramos-Barrado, J. R., Sánchez, M., “Nanostructured CuO Thin Film Electrodes Prepared by Spray Pyrolysis: A Simple Method for Enhancing the Electrochemical Performance of CuO in Lithium Cells” Electrochimica Acta, 49, 4589–4597, 2004.[14] Shariffudin, S. S., Khalid, S. S., Sahat, N. M., Sarah, M. S. P., Hashim, H., “Preparation and Characterization of Nanostructured CuO Thin Films Using Sol-Gel Dip Coating” IOP Conference Series: Materials Science and Engineering, 99, 012007, 2015.[15] Lukasiewicza, M.I., Witkowskia, B.S., Wachnickia, L., Kopalkoa, K., Gieratowskaa, S., Wittlina, A., Jaworskia, M., Guziewicza, E., Godlewskia, M., “(Zn,Cu)O Films by Atomic Layer Deposition-Structural, Optical and Electric Properties” Acta Physıca Polonıca A, 120, 34–36, 2011.[16] Samarasekara, P., Karunarathna, P. G. D. C. K., Weeramuni, H. P., Fernando, C. A. N., “Electrical Properties of Spin Coated Zn Doped CuO Films” Materials Research Express, 5, 066418, 2018.[17] Iqbal, J., Jan, T., Ul-Hassan, S., Ahmed, I., Mansoor, Q., Umair Ali, M., Abbas, F., Ismail, M., “Facile Synthesis of Zn Doped CuO Hierarchical Nanostructures: Structural, Optical and Antibacterial Properties” AIP Advances., 5, 127112, 2015.[18] Anu, Thakur, N., Kumar, J., “Synthesis and Characterization of Copper Oxide Nanoparticles” Journal of Advances Research in Science and Engineering, 7, 167–171, 2009.[19] Yathisha, R. O., Arthoba Nayaka, Y., “Structural, Optical and Electrical Properties of Zinc Incorporated Copper Oxide Nanoparticles: Doping Effect of Zn” Journal of Materials Science, 53, 678–691, 2018.[20] Gürbüz, E., Şahin, B., “Zn-Doping to Improve the Hydration Level Sensing Performance of CuO Films” Applied Physics A, 124, 795, 2018.[21] Aydogu, S., Sendil, O., Coban, MB., “The Optical and Structural Properties of ZnO Thin Films Deposited by the Spray Ptrolysis Technique” Chinese Journal of Physics, 50, 89–100, 2012.[22] Yathisha, R. O., Arthoba Nayaka, Y., Manjunatha, P., Purushothama, H. T., Vinay, M. M., Basavarajappa, K. V., “Study on the Effect of Zn2+ Doping on Optical and Electrical Properties of CuO Nanoparticles” Physica E: Low-dimensional Systems and Nanostructures, 108, 257–268, 2019.[23] Siraj, K., Khaleeq-ur-Rahman, M., Hussain, S. I., Rafique, M. S., Anjum, S., “Effect of Deposition Temperature on Structural, Surface, Optical and Magnetic Properties of Pulsed Laser Deposited Al-Doped CdO Thin Films” Journal of Alloys and Compounds, 509, 6756–6762, 2011.[24] Jiang, T., Wang, Y., Meng, D., Wang, D., “One-Step Hydrothermal Synthesis and Enhanced Photocatalytic Performance of Pine-Needle-like Zn-Doped CuO Nanostructures” Journal of Materials Science: Materials in Electronics, 27, 12884–12890, 2016.[25] Chang, Y.-C., Guo, J.-Y., Chen, C.-M., Di, H.-W., Hsu, C.-C., “Construction of CuO/In 2 S 3 /ZnO Heterostructure Arrays for Enhanced Photocatalytic Efficiency” Nanoscale, 9, 13235–13244, 2017.[26] Dolai, S., Dey, R., Das, S., Hussain, S., Bhar, R., Pal, A. K., “Cupric Oxide (CuO) Thin Films Prepared by Reactive d.c. Magnetron Sputtering Technique for Photovoltaic Application” Journal of Alloys and Compounds, 724, 456–464, 2017.[27] Zhao, X., Wang, P., Yan, Z., Ren, N., “Room Temperature Photoluminescence Properties of CuO Nanowire Arrays” Optical Materials, 42, 544–547, 2015.[28] Erdoğan, İ.Y., “The alloying effects on the structural and optical properties of nanocrystalline copper zinc oxide thin films fabricated by spin coating and annealing method” Journal of Alloys and Compounds, 502, 445–450, 2010.[29] Van der Pauw, L.J., “A method of measuring specific resistivity and Hall effect of discs of arbitrary shape” Philips Research Reports, 13, 1–9, 1958.[30] Dhaouadi, M., Jlassi, M., Sta, I., Ben Miled, I., Mousdis, G., Kompitsas, M., Dimassi, W., “Physical Properties of Copper Oxide Thin Films Prepared by Sol – Gel Spin – Coating Method” American Journal of Physics and Applications, 6, 43–50, 2018.[31] Wanjala, K.S., Njoroge, W.K., Makori, N.E., Ngaruiya, J.M., “Optical and Electrical Characterization of CuO Thin Films as Absorber Material for Solar Cell Applications” American Journal of Condensed Matter Physics, 6, 1–6, 2016.