Abstract
Mg x Zn1-x O films with 0.15 mole composition of Magnesium were successfully deposited by the spin coating sol–gel method. Zinc acetate dihydrate and Magnesium acetate were used as starting precursors to prepare the solution in ethanol solvent. The MgZnO films were deposited on microscopic glass substrates and post annealed at three different temperatures. X-ray Diffractometer (XRD), Scanning Electron Microscopy (SEM) and UV–VIS Spectrophotometer were used to characterize the deposited films for studying structural and optical properties. Energy dispersive analysis by X-ray (EDAX) was used to determine incorporation of Mg content in ZnO films. XRD spectrum reveals that, the deposited Mg doped ZnO films were polycrystalline in nature. The intensity of c-axis in the XRD spectrum goes on decreasing as Mg composition slightly increasing corresponding to increase in annealing temperature. EDAX spectra clearly showed the incorporation of Mg into the ZnO films. Semiconductor characterization system was used for the I–V characterization of MgZnO films. I–V characteristics show decrease in current as increase in the biased voltage. Optical band gap of MgZnO films was found to be increased from 3.2 to 3.38 eV as estimated from the absorption coefficients.
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Aslan M.H., Oral A.Y., Mensur E., Gul A., Basaran E.: Preparation of C-axis oriented zinc-oxide thin films and the study of their microstructure and optical properties. Sol. Energ. Mat. Sol. C 82(4), 543–552 (2004)
Bhattacharya P., Basu P.K., Mukharjee N., Mondal A., Saha H., Basu S.: Deposition of microcrystalline ZnO thin films on p-Si by noval galvanic mehtod and application of heterojunction as methan sensor. J. Mater. Sci:Mat. Electron. 18, 823–829 (2007)
Bhole M.P., Patil D.S.: Effect of annealing temperature on optical constants of zinc oxide films. J. Phys Chem. Sol. 70, 466–471 (2009)
Bhole M.P., Samuel E.P., Patil D.S.: Numerical simulation of optical confinement in ZnO based heterostructures at 375-nanometer wavelength. J. Modern Optics 22(12), 1985–1995 (2008)
Bhuiyan M.S., Paranthaman M., Salama K.: Solution derived textured oxide thin films-a review. Supercond. Sci. Technol. 19, R(1–21) (2006)
Chang Y.-S., Chien C.-T., Chen C.-W., Chu T.-Y., Chiang H.H., Ku C.H., Wu J.J., Lin C.S., Chen L.C., Chen K.H.: Structural and optical properties of single crystal Mg x Zn1-x O nanorods-Expremental and theoretical studies. J. Appl. Phys. 101, 033502(1–7) (2007)
Chen N.B., Wu H.Z., Qiu D.J., Xu T.N., Chen J., Shen W.Z.: Temperature dependent optical properties of hexagonal and cubic Mg x Zn1-x O thin-films alloys. J. phys:Condens. Matter. 16, 2973–2980 (2004)
Chen N.B., Wu H.Z., Qiu D.J., Xu T.N., Chen J., Shen W.Z.: Temperature dependent of hexagonal ans cubic Mg x Zn1-x O thin film alloys. J. Phys. Cond. Matt. 16, 2973–2980 (2004)
Choopun S., Vispute R.D., Yang W., Sharma R.P., Venkatesan T., Shen H.: Realization of band gap above 5.0 eV in metastable cubic-phase Mg x Zn1-x O alloy films. Appl. Phys. Lett. 80(9), 1529–1531 (2002)
Dong X., Zhu H.C., Zhang B.L, Li X.P., Du G.T.: ZnO-based homojunction light emitting diodes fabricated by metal-organice chemical vapor deposition. Semicond. Sci. Technol. 22, 1111–1114 (2007)
Ghosh R., Basak D.: Composition dependent ultraviolet photoresponse in Mg x Zn1-x O thin films. J. Appl. Phys. 101, 113111(1–6) (2007)
Heitsh S., Benndorf G., Zimmermann G., Schulz C., Spemann D., Hochmuth H., Schmidt H., Nobis T., Lorenz M., Grundmann M.: Optical and structural properties of MgZnO/ZnO hetero and double heterostructures grown by pulsed laser deposition. Appl. Phys. A: Mater. Sci. Process. 88, 99–104 (2007)
Jiang D.Y., Shen D.Z., Liu K.W., Shan C.X., ZhaO Y.M., Yang T., Yao B., Lu Y.M., Zhang J.Y.: Effect of post annealing on the band gap of Mg x Zn1-x O thin films. Semicond. Sci. Technol. 23, 035002 (1–5) (2008)
Liang J., Wu H., Chen N., Xu T.: Annealing effect on electrical properties of high-k MgZnO films on silicon. Semicond. Sci. Technol. 20, L15–L19 (2005)
Lin Y.-J., Wu P.-H., Tsai C.-L., Liu C.-J., Lin Z.-R., Chang H.-C., Lee C.-T.: Effect of Mg incorporation on the optical properties of ZnO prepared by the sol–gel method. J. Appl. Phys. 103, 113709(1–4) (2008)
Murakawa T., Fukudome T., Hayashi T., Isshiki H., Kimura T.: Structural and optical properties of Mg x Zn1-x O thin films formed by sol–gel method. Phys. Stat. Sol. (c) 1(10), 2564–2568 (2004)
Samuel E.P., Bhole M.P., Patil D.S.: Mode confinement and near field intensity analysis in a GaN-based blue-green laser diode. Semicond. Sci. Technol. 21, 993–997 (2006)
Scott G.D., McLanchlan T.A., Sennett R.S.: The thickness measurement of thin films by multiple beam interferometry. J. Appl. Phys. 21, 843–846 (1950)
Sharma A.K., Narayan J., Muth J.F., Teng C.W., Jin C., Kvit A., Kolbas R.M., Holland O.W.: Optical and structural properties of epitaxial Mg x Zn1-x O alloys. Appl. Phys. Lett. 75(21), 3327–3329 (1999)
Shukla R.P., Udupa D.V., Das N.C., Mantravadi M.V.: Non-destructive thickness measurements of dichromated gelation films deposited on glass plates. Optics Laser Technol. 38(7), 552–557 (2006)
Sonawane, B.K., Bhole, M.P., Patil, D.S.: J. Optele. Adv. Mater. (2009) (in press)
Tanaka H., Fujita S., Fujita S.: Fabrication of wide band gap Mg x Zn1-x O quasi-ternary alloys by molecular-beam epitaxy. Appl. Phys. Lett. 86, 192911(1–3) (2005)
Vispute R.D., Talyansky V., Choopenm S., Sharma R.P., Venkatesan T., He M., Tang X., Halpern J.B., Spencer M.G., Li Y.X., Salamancariba L.G., Iliadis A.A., Jones K.A.: Heteroepitaxy of ZnO on GaN and its implications for the fabrication of hybrid optoelectronic device. Appl. Phys. Lett. 73, 348–351 (1998)
Wang M., Kim E.J., Kim S., Chung J.S., Yoo I.-K., Shin E.W., Hahn S.H., Park C.: Optical and structural properties of sol–gel prepared MgZnO alloy thin films. Thin Solid Films 516, 1124–1129 (2008)
Zhao D., Liu Y., Shen D., Lu Y., Zhang J., Fan X.: Photoluminescence properties of Mg x Zn1-x O alloy thin films fabricated by sol–gel deposition method. J. Appl. Phys. 90(11), 5561–5563 (2001)
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Sonawane, B.K., Bhole, M.P. & Patil, D.S. Structural, optical and electrical properties of post annealed Mg doped ZnO films for optoelectronics applications. Opt Quant Electron 41, 17–26 (2009). https://doi.org/10.1007/s11082-009-9317-y
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DOI: https://doi.org/10.1007/s11082-009-9317-y