The chemical bath deposition (CBD) technique was used for the synthesis of the tin oxide (SnO2) thin films. X-ray diffraction (XRD) was employed to find the crystallite size by using Debye Scherrer’s formula. The surface morphology of SnO2 films was analyzed by the scanning electron microscopic (SEM) studies. The FT-IR spectrum exhibits the strong presence of SnO2. The optical properties of the SnO2 thin films were determined using UV-Visible spectrum. The dielectric studies were carried out at different frequencies and at different temperatures for the prepared SnO2 thin films. Further, electronic properties, such as valence electron plasma energy, average energy gap or Penn gap, Fermi energy and electronic polarizability of the SnO2 thin films, were determined. The ac conductivity of the SnO2 thin films increases with increase in temperature and frequency. The activation energy was determined by using dc electrical conductivity measurement. The Hall properties were also calculated.
References
[1]
Lee, S., Kim, Y.W. and Chen, H. (2001) Electrical Properties of Ta-Doped Thin Films Prepared by the Metal-Organic Chemical-Vapor Deposition Method. Applied Physics Letters, 78, 350-352. http://dx.doi.org/10.1063/1.1337640
[2]
Watson, J. (1984) The Tin Oxide Gas Sensor and Its Applications. Sensors and Actuators, 5, 29-42.
http://dx.doi.org/10.1016/0250-6874(84)87004-3
[3]
Minami, T. (1999) Transparent and Conductive Multicomponent Oxide Films Prepared by Magnetron Sputtering. Journal of Vacuum Science & Technology A, 17, 1765. http://dx.doi.org/10.1116/1.581888
[4]
Liu, D., Wang, Q., Chang, H. and Chen, H. (1995) Variant Structure in Metal-Organic-Chemical-Vapor-Deposition-Derived SnO2 Thin Films on Sapphire (0001). Journal of Materials Research, 10, 1516-1522.
http://dx.doi.org/10.1557/JMR.1995.1516
[5]
Kaito, C. and Saito, Y. (1986) Structure and Crystallization Process of a Thin Film Prepared by Vacuum Evaporation of SnO2 Powder. Journal of Crystal Growth, 79, 403-409. http://dx.doi.org/10.1016/0022-0248(86)90468-9
[6]
Lamelas, F. and Reid, S. (1999) Thin-Film Synthesis of the Orthorhombic Phase of SnO2. Physical Review B, 60, 9347. http://dx.doi.org/10.1103/PhysRevB.60.9347
[7]
Choudhary, R., Ogale, S., Shinde, S., Kulkarni, V., Venkatesan, T., Harshavardhan, K., Strikovski, M. and Hannoyer, B. (2004) Pulsed-Electron-Beam Deposition of Transparent Conducting SnO2 Films and Study of Their Properties. Applied Physics Letters, 84, 1483. http://dx.doi.org/10.1063/1.1651326
[8]
Ayouchi, R., Martin, F., Barrado, J., Martos, M., Morales, J. and Sánchez, L. (2000) Use of Amorphous Tin-Oxide Films Obtained by Spray Pyrolysis as Electrodes in Lithium Batteries. Journal of Power Sources, 87, 106-111.
http://dx.doi.org/10.1016/S0378-7753(99)00435-8
[9]
Baik, N., Sakai, G., Miura, N. and Yamazoe, N. (2000) Hydrothermally Treated Sol Solution of Tin Oxide for Thin-Film Gas Sensor. Sensors and Actuators B: Chemical, 63, 74-79. http://dx.doi.org/10.1016/S0925-4005(99)00513-4
[10]
Ghoshtagor, R. (1978) Mechanism of CVD Thin Film SnO2 Formation. Journal of the Electrochemical Society, 125, 110-117. http://dx.doi.org/10.1149/1.2131373
[11]
Deshpande, N., Vyas, J. and Sharma, R. (2008) Preparation and Characterization of Nanocrystalline Tin Oxide Thin Films Deposited at Room Temperature. Thin Solid Films, 516, 8587-8593. http://dx.doi.org/10.1016/j.tsf.2008.06.016
[12]
Tsukuma, K., Akiyama, T. and Imai, H. (1997) Liquid Phase Deposition Film of Tin Oxide. Journal of Non-Crystalline Solids, 210, 48-54. http://dx.doi.org/10.1016/S0022-3093(96)00583-2
[13]
Supothina, S. and De Guire, M. (2000) Characterization of SnO2 Thin Films Grown from Aqueous Solutions. Thin Solid Films, 371, 1-9. http://dx.doi.org/10.1016/S0040-6090(00)00989-5
[14]
Ebrahimiasl, S., Yunus, W.Md.Z.W., Kassim, A. and Zainal, Z. (2011) Synthesis of Nanocrystalline SnOx (x = 1–2) Thin Film Using a Chemical Bath Deposition Method with Improved Deposition Time, Temperature and pH. Sensors, 11, 9207-9216. http://dx.doi.org/10.3390/s111009207
[15]
Suresh, S. and Arunseshan, C. (2014) Dielectric Properties of Cadmium Selenide (CdSe) Nanoparticles Synthesized by Solvothermal Method. Applied Nanoscience, 4, 179-184. http://dx.doi.org/10.1007/s13204-012-0186-5
[16]
Suresh, S. (2014) Studies on the Dielectric Properties of CdS Nanoparticles. Applied Nanoscience, 4, 325-329.
http://dx.doi.org/10.1007/s13204-013-0209-x
[17]
Sagadevan, S. and Shanmuga Sundaram, A. (2014) Dielectric Properties of Lead Sulphide Thin films for Solar Cell Applications. Chalcogenide Letters, 11, 159-165.
[18]
Thirumavalavan, S., Mani, K. and Sagadevan, S. (2015) Structural, Surface Morphology, Optical And Electrical Investigation of CdSe Thin Films. Chalcogenide Letters, 12, 237-246.
[19]
Thirumavalavan, S., Mani, K. and Sagadevan, S. (2015) Investigation on Structural, Optical, Morphological and Electrical Properties of Lead Sulphide (PbS) Thin Films. Journal of Ovonic Research, 11, 123-130.