Spin Speed Dependence of Optical Band Gap of SOL Gel Spin Coated Zinc Oxide Thin Films

Rajesh Kumar*, Aakanksha Sahu**, Narinder Arora***, Rabia Sareen****, Gagandeep Kaur*****
*-***** P.G. Department of Physics, D. A. V College, Amritsar, India.
Periodicity:July - September'2014
DOI : https://doi.org/10.26634/jms.2.2.2814

Abstract

The zinc oxide (ZnO) thin films have been obtained by sol gel spin coating technique on to the glass substrates kept at  4000 C. The conditions have been optimized to obtain quality films. Optical absorption studies to find optical band gap of the films have been made through UV-Visible spectroscopy in the spectral range of 200 -1100 nm. Effect of spin speed on the optical band gap of these films has been studied. Results show that optical band gap of the films get modified on increasing the spin speed of films.

Keywords

Spray Pyrolysis, Zinc Oxide, Optical Band Gap.

How to Cite this Article?

Kumar, R., Sahu, A., Arora, N., Sareen, R., & Kaur, G. (2014). Spin Speed Dependence of Optical Band Gap of SOL Gel Spin Coated Zinc Oxide Thin Films. i-manager's Journal on Material Science, 2(2), 6-9. https://doi.org/10.26634/jms.2.2.2814

References

[1]. P. Mitra, A. P. Chatterjee, H.S. Maiti, (1998). “ZnO thin film sensor”. Materials Letters, Vol.35, No.1-2, April 1998, pp 33- 38.
[2]. C. H. Kwon, H. K. Hong, D. H. Yun, K. Lee, S. T. Kim, Y. H. Roh, B. H. Lee, (1995). ”Thick-film zinc-oxide gas sensor for the control of lean air-to-fuel ratio in domestic combustion systems” Sens. Actuators B 25,610, Vol 25,No.1, pp 610- 613.
[3]. K. L. Chopra, S. Major, D. K. Pandya, (1983). ”Transparent conductors—A status review” Thin Solid Films, Vol.102, No.1, pp 1-46.
[4]. S. Major, A. Banerjee, K. L. Chopra, (1986). ”Thicknessdependent properties of indium-doped ZnO films” Thin Solid Films, Vol.143, No.1,pp 19–30.
[5]. J. B. Yoo, A. L. Fahrenbruch, R. H. Bube, (1990). ” Transport mechanisms in ZnO/CdS/CuInSe2 solar cells”, J. Appl.Phys, Vol.68,No. 9 pp. 4694.
[6]. D. Dimova-Malinovska, (1999). ”Application of stainetched porous silicon in light emitting diodes and solar cells”, J. Lumin. Vol.80,No. 1–4,pp 207-211
[7]. Z.-C. Jin, I. Hamberg, C. G. Granqvist, B. E.Sernelius, K.- F. Berggren, (1988). ”Reactively sputtered ZnO: Al films for energy-efficient windows”, Thin Solid Films, Vol.164 pp 381- 386.
[8] .J. G. E. Gardeniers, Z. M. Rittersma, G. J. Burger, (1998). “Preferred orientation and piezoelectricity in sputtered ZnO films” J.Appl. Phys. Vol.83,No.12,pp 7844-7854.
[9]. Soon-Jin So, Choon-Bae Park, (2005). ”Diffusion of phosphorus and arsenic using ampoule-tube method on undoped ZnO thin films and electrical and optical properties of P-type ZnO thin films”, Journal of Crystal Growth 285, Vol.285,No. 4, pp 606-612.
[10]. S. T. Tan, B. J. Chen, X. W. Sun, X. Hu, X. H. Zhang, S. J.Chua, (2005). “Properties of polycrystalline ZnO thin films by metal organic chemical vapor deposition”, Journal of Crystal Growth ,Vol.281,No. 2,pp 571-576.
[11]. Young-Sung Kim, Weon-Pil Tai, Su-Jeong Shu, (2005). ”Effect of preheating temperature on structural and optical properties of ZnO thin films by sol–gel process”, Thin Solid Films, Vol.491,No. 1–2, pp 153-160.
[12]. R. Martins, R. Igreja, I. Ferreira, A. Marques, A.Pimentel, A. Gonçalves, E. Fortunato, (2005). “Room temperature dc and ac electrical behaviour of undoped ZnO films under UV light”, Materials Science and Engineering, Vol.118,No.1,pp 135-140.
[13]. J.Bardeen, F.J.Blatt and L.H.Hall, (1956). “Indirect Transitions from the valence to the conduction bands”, Photoconductivity Conf. Ed. R.Breckenridge, B.Russel and T.Hahn, John-Weiley, New York. pp.146-154
[14].D.S.CHalin , I.A .Talib , A .R.Daud and M.A.A.Hamid,(2009). “The Effect Of Spin Coating Rate On Morphology And Optical Properties Of Cuprous Oxide Thin Film Prepared By Sol-Gel Technique” Solid state science and technology, Vol. 17, No 1,pp 119-125.
[15]. R Capan, N.B.Chaure, A K Hassan and A K Ray, (2004). “Optical dispersion in spun nanocrystalline titania thin films.” Semicod. Sci. Tech, Vol.19 No.2,pp 198-202
If you have access to this article please login to view the article or kindly login to purchase the article

Purchase Instant Access

Single Article

North Americas,UK,
Middle East,Europe
India Rest of world
USD EUR INR USD-ROW
Pdf 35 35 200 20
Online 35 35 200 15
Pdf & Online 35 35 400 25

Options for accessing this content:
  • If you would like institutional access to this content, please recommend the title to your librarian.
    Library Recommendation Form
  • If you already have i-manager's user account: Login above and proceed to purchase the article.
  • New Users: Please register, then proceed to purchase the article.