Asian Journal of Science and Applied Technology (AJSAT)
Electrical Conduction Properties of Sb & Se Co-Doped PbTe Thin Films
Author : L. Kungumadevi and R. SathyamoorthyVolume 7 No.2 July-December 2018 pp 16-19
Abstract
Thenanocrystalline Sb & Se co-doped PbTe thin films were prepared by using an integrated physical-chemical approach by evaporating chemically synthesized Sb& Se co-doped PbTenanopowders on glass substrates. The prepared films were analysed by XRD, SEM, EDAX and their results were discussed in detail. The DC electrical conduction mechanism in Al/SbPbTeSe/Al thin film sandwich system at different temperatures (298–423 K) was studied and was found to be Poole-Frenkel type.
Keywords
Thin Films, Crystal Structure, Electrical Properties, Metal–Semiconductor–Metal, Poole-FrenkelType
Full Text:
References
[1] P. F. P. Poudeu, J. D’Angelo, H. J. Kong, A. Downey, J. L. Short, R. Pcionek, T. P. Hogan, C. Uher and M. G. Kanatzidis, “Nanostructures versus Solid Solutions: Low Lattice Thermal Conductivity and Enhanced Thermoelectric Figure of Merit in Pb9.6Sb0.2Te10-xSex Bulk Materials”, Journal of American Chemical Society, Vol. 128, pp. 14347-14355, 2006.
[2] J. C. Caylor, K. Coonley, J. Stuart, T. Colpitts and R. Venkatasubramanian, “Enhanced thermoelectric performance in PbTe-based superlattice structures from reduction of lattice thermal conductivity”, Applied Physics Letters, Vol. 87, pp. 23105, 2005.
[3] T. C. Harman, P. J. Taylor, M. P. Walsh and B. E. LaForge, “Quantum Dot Superlattice Thermoelectric Materials and Devices”, Science, Vol. 297, pp. 2229-2232, 2002.
[4] K. F. Hsu, S. Loo, F. Guo, W. Chen J. S. Dyck, C. Uher, T. Hogan, E. K. Polychroniadis and M. G. Kanatzidis, “Cubic AgPbmSbTe2+m: Bulk Thermoelectric Materials with High Figure of Merit”, Science, Vol. 303, pp. 818-821, 2004.
[5] R.M. AbadelLatif, “DC Electrical measurements on evaporated thin films of vanadium pentoxide”, Physica B: Condensed Matter, Vol. 254, pp. 273- 276, 1998.
[6] S. Gogoi and K. Barua, “D.C. electrical properties of vacuum-deposited CdTe films”,Thin Solid Films, Vol. 92, pp. 227-230, 1982.
[7] Z.H. Dughaish, “Lead telluride as a thermoelectric material for thermoelectric power generation”, Physica B: Condensed Matter, Vol. 322, pp. 205-223, 2002.
[8] A. C. Rastogi and K.L. Chopra, “Structure-sensitive optical scattering by thin polyvinylchloride (PVC) films”, Thin Solid Films, Vol. 34, pp. 377-380, 1976.
[9] W.F. Mohammed, Ma’an A. S. Yousif, “The electrical properties of post-deposition annealed and as-deposited In-doped CdTe thin films”, Renewable Energy, Vol. 26, pp. 285-294, 2002.