2
Department of Technical and Engineering, Imam Khomeini International University
3
School of Materials and Metallurgy, Iran University of Science and Technology
Abstract
Er doped ZnO layers have many applications in optical communications. Transparent Er-doped ZnO thin films were deposited on soda-lime glass substrates by sol-gel method. To optimize the properties, different amounts of Er dopant and temperatures were used. The prepared nano-layers were characterized by XRD and spectrophotometery. All coatings showed ZnO hexagonal wurtzite crystal structure with 14-19nm particle size and very good transmittance (80%) in the range of 750-1750 nm. The maximum optical transmission was achieved by ZnO film doped with 3.0 wt.% Er and post-heat-treated in air at 550C.
R. W. Berry, P. M. Hall, M. T. Harris, Thin Film Technology. Van Nostrand, Princeton, N. J. 1968, 3-4.
M. Kondow, T. Kitatani, S. Nakatsuka, M. C. Larson, K. Nakahara, Y. Yazawa, M. Okai, K. Uomi, GaInAs: A Novel Material for Long-Wavelength Semiconductor Lasers. IEEE J. Selected Topics Quantum Electron. 3(1997), 719-730.
X. T. Zhang, Y. C. Liu, J. G. Ma, Y. M. Lu, D. Z. Shen, W. Xu, G. Z. Zhong, X. W. Fan, Room- Temperature Blue Luminescence from ZnO: Er Thin Filma. ThinSolidFilms. 413(2002), 257-261.
J. Xu, Luminescence in ZnO. MSc. Thesis, VirginiaCommonwealthUniversity, 2001, 56-58.
C. Eypert, L. Znaidi, Spectroscopic Ellipsometry Study of ZnO Thin Films. Optical Coatings UVISEL, SE12, 203-206, 2004.
J. Wiley, Sons, Kirk-Othmer Encyclopedia of Chemical Technology. New York, Fourth Edition, Vol. 5, 1992, 616-617.
K. Y. Cheong , N. Muti, S. R. Ramanan, Electrical and Optical Studies of ZnO:Ga Thin Films Fabricated via the Sol- Gel Technique. Thin Solid Films. 410(2002), 142-146.
U. N. Maiti, P. K. Ghosh, S. Nandy, K. K. Chattopadhyay, Effect of Mn doping on the Optical and Structural Properties of ZnO Nano/Micro-Fibrous Thin Film Synthesized by Sol-Gel Technique. PhysicaB. 387(2007), 103-108.
WWW. solgel. com/articles/Nov00/coatlinks.htm
T. Schuler, M. A. Aegerter, Optical, Electrical and Structural Properties of Sol- Gel ZnO:Al Coatings. ThinSolid Films, 351(1999), 125-131.
Y. H. Cheng, L. K. Teh, Y. Y. Tay, H. S. Park, C.C. Wong, S. Li, Coating Process of Zno Thin Film on Macroporous Silica Periodic Array. Thin Solid Films. 504(2006), 41-44.
Farashiani, A., Baghshahi, S., & Tamizifar, M. (2007). Investigating the Optical and Structural Characteristics of ZnO:Er nano-layers Prepared by Sol-Gel Method. Journal of Color Science and Technology, 1(1), 41-47.
MLA
A. Farashiani; S. Baghshahi; M. Tamizifar. "Investigating the Optical and Structural Characteristics of ZnO:Er nano-layers Prepared by Sol-Gel Method". Journal of Color Science and Technology, 1, 1, 2007, 41-47.
HARVARD
Farashiani, A., Baghshahi, S., Tamizifar, M. (2007). 'Investigating the Optical and Structural Characteristics of ZnO:Er nano-layers Prepared by Sol-Gel Method', Journal of Color Science and Technology, 1(1), pp. 41-47.
VANCOUVER
Farashiani, A., Baghshahi, S., Tamizifar, M. Investigating the Optical and Structural Characteristics of ZnO:Er nano-layers Prepared by Sol-Gel Method. Journal of Color Science and Technology, 2007; 1(1): 41-47.
)
