Abstract
Mg x Zn1−x O thin films with different Mg contents were prepared by using the sol-gel spin-coating method. Optical parameters, such as the optical band gap, the absorption coefficient, the Urbach energy, the refractive index, the dispersion parameter, and the optical conductivity, were studied in order to investigate the effects of Mg content on the optical properties of Mg x Zn1−x O thin films. The optical band gap and the Urbach energy increased with increasing Mg content. The dispersion energy, the single-oscillator energy, the average oscillator wavelength, the average oscillator strength, and the refractive index at infinite wavelength of the Mg x Zn1−x O thin films were affected by the incorporation. Also, the optical conductivity of the Mg x Zn1−x O thin films increased with increasing photon energy.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Ü. Özgür, Y. I. Alivov, C. Liu, A. Teke, M. A. Reshchikov, S. Dogğan, V. Avrutin, S-J. Cho and H. Morkoç, J. Appl. Phys. 98, 041301 (2005).
T. Makino, Y. Segawa, M. Kawasaki, A. Ohtomo, R. Shiroki, K. Tamura, T. Yasuda and H. Koinuma, Appl. Phys. Lett. 78, 1237 (2001).
S. Kalusniak, S. Sadofev, J. Puls and F. Hannenberger, Laser Photonics Rev. 3, 233 (2009).
Y-S. Choi, J-W. Kang, D-K. Hwang and S-J. Park, IEEE Trans. Electron Devices 57, 26 (2010).
Y. S. Kim, W. P. Tai and S. J. Shu, Thin Solid Films 491, 153 (2005).
F. Peng, H. Wang, H. Yu and S. Chen, Mater. Res. Bull. 41, 2123 (2006).
M. S. Kim et al., J. Cryst. Growth 311, 3568 (2009).
V. V. Siva Kumar, F. Singh, A. Kumar and D. K. Avasthi, Nucl. Instrum. Methods Phys. Res., Sect. B 244, 91 (2006).
A. Ashour, M. A. Kaid, N. Z. El-Sayed and A. A. Ibrahim, Appl. Surf. Sci. 252, 7844 (2006).
S. Lemlikchi, S. Abdelli-Messaci, S. Lafane, T. Kerdja, A. Guittoum and M. Saad, Appl. Surf. Sci. 256, 5650 (2010).
Y. Lee, C. Lee, E. Shim, E, Jung, J. Lee, D. Y. Kim, S. Lee, D. Fu and H. D. Yoon, J. Korean Phys. Soc. 59, 2774 (2011).
Y. Li, L. Xu, X. Li, X. Shen and A. Wang, Appl. Surf. Sci. 256, 4543 (2010).
B. H. Kong, D. C. Kim, Y. Y. Kim and H. K. Cho, J. Korean Phys. Soc. 50, 1701 (2007).
M. S. Kim, K. T. Noh, K. G. Yim, S. Kim, G. Nam, D-Y. Lee, J. S. Kim, J. S. Kim and J-Y. Leem, Bull. Korean Chem. Soc. 32, 3453 (2011).
K. H. Kim, K. C. Park and D. Y. Ma, J. Appl. Phys. 81, 7764 (1997).
M. Wang, E. J. Kim, S. Kim, J. S. Chung, I-K. Yoo, E. W. Shin, S. H. Hahn and C. Park, Thin Solid Films 516, 1124 (2008).
M. Girtan and G. Folcher, Surf. Coat. Technol. 172, 242 (2003).
J. Tauc, R. Grigorovici and A. Yancu, Phys. Status Solidi 15, 627 (1996).
D. Dragoman and M. Dragoman, Optical Characterization of Solids (Springer-Verlag, Heidelberg, 2002).
A. Ohtomo, M. Kawasaki, T. Koida, K. Masubuchi, H. Koinuma, Y. Sakurai, Y. Toshida, T. Yasuda and Y. Segawa, Appl. Phys. Lett. 72, 2466 (1998).
W. Wei, C. Jin, J. Narayan and R. J. Narayan, Solid State Commun. 149, 1670 (2009).
F. Urbach, Phys. Rev. 92, 1324 (1953).
A. K. Wolaton and T. S. Moss, Proc. R. Soc. London, Ser. A 81, 5091 (1963).
M. Didomenico and S. H. Wemple, J. Appl. Phys. 40, 720 (1969).
J. N. Hodgson, Optical Absorption and Dispersion in Solids (Chapman and Hall Ltd., 11 New Fetter Lane, London EC4, 1970).
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Kim, M.S., Kim, T.H., Leem, JY. et al. Optical parameters of Mg x Zn1−x O thin films prepared by using the sol-gel method. Journal of the Korean Physical Society 60, 830–835 (2012). https://doi.org/10.3938/jkps.60.830
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.3938/jkps.60.830