Effect of Aluminum Doping on Zinc Oxide Thin Film Properties Synthesis by Spin Coating Method

Authors

  • Alaa J. Ghazai Physics Dept. Science College, Al-Nahrain University, Baghdad, Iraq
  • Emad A. Salman Physics Dept. Science College, Thi Qar university, Nassiryha, Iraq
  • Zahraa A. Jabbar Physics Dept. Science College, Thi Qar university, Nassiryha, Iraq

Keywords:

ZnO thin films, Al-doped, crystalline size, spin coating, Nanostructure.

Abstract

A sol-gel spin coating method has been successfully used to synthesize pure zinc oxide (ZnO) and Al-doped ZnO thin films. Synthesis of pure phase of ZnO thin films with polycrystalline hexagonal wurtzite structure with the lattice parameters a=3.2568A and c=5.2108A have been revealed using XRD analysis. There is no change in the phase structure with Al doped ZnO thin films and the lattice parameters decreased with increased in Al-doping concentration. The crystallite size, lattice constants and strain are decreased, as the Al dopant concentration increases in ZnO lattice which is attributed to the interstitial substitution of Al ions in Zn sites into ZnO lattice as confirmed by EDX results. SEM studies show that with Al-doping the growth of the films takes place to be nanowire in structure at Al concentration up to 3% wt and the size reduced more at 5% wt. This indicates that Al-doping has an influence on the surface morphology of the films. Bandgap energy of ZnO is 3.37 eV with direct band to band transitions and decreased to 3.25 eV with increased Al-doping concentration. These properties of Al doped ZnO thin films make it a promising materials to be effectively used in many optoelectronic devices and application such as solar cell,  photocatalysis, gas sensor and so on. 

References

[1] M. Caglar, S. Ilican, Y. Caglar, Influence of dopant concentration on the optical properties of ZnO: in films by sol–gel method, Thin Solid Films 517 (2009) 5023–5028.
[2] S. Ilican, Y. Caglar, M. Caglar, Preparation and characterization of ZnO thin films deposited by sol–gel spin coating method, J. Optoelectron. Adv. Mater. 10 1(2008) 2578–2583.
[3] W.Y. Zhang, D.K. He, Z.Z. Liu, L.J. Sun, Z.X. Fu, Preparation of transparent conducting Al-doped ZnO thin films by single source chemical vapour deposition, J. Optoelectron. Adv. Mater – Rapid Commun. 4 (11) (2010) 1651–1654.
[4] H. Kim, A. Pique, J. S. Horwitz, H. Murata, Z. H. Kafafi, C. M. Gilmore, D. B. Chrisey, "Effect of aluminum doping on zinc oxide thin films grown by pulsed laser deposition for organic light-emitting devices", Thin Solid Films 377 (2000) 798– 802.
[5] S.H. Jeong*, J.W. Lee, S.B. Lee, J.H. Boo, "Deposition of aluminum-doped zincoxide films by RF magnetron sputtering and study of their structural, electrical and optical properties", Thin Solid Films 435 (2003) 78–82
[6] Abbas Matrood Bashi, Araa Ali Aljuboori, "Synthesis and Characterization of ZnO doped by Al via sol-gel method", Journal of Kerbala University, 9 (2), (2011), 249-255.
[7] Keun Jung, Dong Wook Shin, Seok-Jin Yoon and Ji-Won Choi, Won-Kook Choi, Jong-Han Song, Hyun Jae Kim "Electrical and Optical Properties of Al-doped Zinc-oxide Thin Films Deposited at Room Temperature by Using the Continuous Composition Spread Method", Journal of the Korean Physical Society, 57 (4), (2010), 1092-1095
[8] M. Mozibur Rahman, M.K.R. Khan, M. Ra¯qul Islam, M.A. Halim, M. Shahjahan, M.A. Hakim, Dilip Kumar Saha and Jasim Uddin Khan, "Effect of Al Doping on Structural, Electrical, Optical and Photoluminescence Properties of Nano-Structural ZnO Thin Films", J. Mater. Sci. Technol., 2012, 28(4), 329{335.
[9] Erica Pereira da Silva1, Michel Chaves, Gilvan Junior da Silva, Larissa Baldo de Arruda, Paulo Noronha Lisboa-Filho, Steven Frederick Durrant, José Roberto Ribeiro Bortoleto "Al-Doping Effect on the Surface Morphology of ZnO Films Grown by Reactive RF Magnetron Sputtering", Materials Sciences and Applications, 4, (2013), 761-767
[10] Ahmed A. Al-Ghamdi , Omar A. Al-Hartomy, M. El Okr, A.M. Nawar, S. El-Gazzar, Farid El-Tantawy, F. Yakuphanoglu, " Semiconducting properties of Al doped ZnO thin films" Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 131 (2014) 512–517.
[11] A. Alkahlout, " A Comparative Study of Spin Coated Transparent Conducting Thin Films of Gallium and Aluminum Doped ZnO Nanoparticles" Physics Research International (2015), 1-8
[12] L.H. Van, M.H. Hong, J. Ding, "Structural and magnetic property of Co-doped- ZnO thin films prepared by pulsed laser deposition", J. Alloys Comp. 449 (1), (2008) 207–209.
[13] A. A. Al-Ghamdi, F. Al-Hazmi, F. Alnowaiser, R. M. Al-Tuwirqi, Attieh A. Al- Ghamdi, O.A. Alhartomy, F. El-Tantawy, F. Yakuphanoglu, "A new facile synthesis of ultra fine magnesium oxide nanowires and optical properties", J. Electroceram. 29 (2012) 198–203.
[14] A. J. Hashim, Alaa J. Ghazai, M. S. Jaafar, NurAzimah Mansor, Zainiharyati Mohd Zain, " Structural and Optical Properties of Zinc Oxide Film Prepared Using RF-Sputtering Technique for Glugose Biosensor", Int. J. Electrochem. Sci., 7 (2012) 11876 – 11883.
[15] A.J. Hashim?, M.S. Jaafar, Alaa J. Ghazai, N.M. Ahmed, " Fabrication and characterization of ZnO thin film using sol–gel method" International Journal for Light and Electron Optics (Optik), 124 (2013) 491– 492.
[16] Alaa J. Ghazai, Emad A, Salman and Zahraa H., " Structural Properties of Zno Thin Films Prepared Using Different Techniques", Swift Journal of Physical Sciences, 2(1), (2016), 001-004.
[17] Alaa Jabbar Ghazai, Haslan Abu Hassan, Zanuri Bint Hassan, "Structural and optical properties of Si-doped Al0.08In0.08Ga0.84N thin films grown on different substrates for optoelectronic devices", Journal of Superlattices and Microstructures 95 (2016), 95-107.
[18] Chia-Lung Tsai, Yow-Jon Lin, Chia-Jyi Liu, Lance Horng, Yu-Tai Shih, Mu-Shan Wang, Chao-Shien Huang, Chuan.-Sheng. Jhang, Ya-Hui Chen, Hsing-Cheng Chang, Structural, electrical, optical and magnetic properties of CO0.2AlxZn0.8-xO films, Appl. Surf. Sci. 255 (2009) 8643–8647.

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Published

2016-11-27

How to Cite

J. Ghazai, A., A. Salman, E., & A. Jabbar, Z. (2016). Effect of Aluminum Doping on Zinc Oxide Thin Film Properties Synthesis by Spin Coating Method. American Scientific Research Journal for Engineering, Technology, and Sciences, 26(3), 202–211. Retrieved from https://asrjetsjournal.org/index.php/American_Scientific_Journal/article/view/2280

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