Diffusion of Charged Species in Metal Oxides and Polymeric Solids Using AC Impedance Technique

Abstract:

The diffusion of charged species in solids is a very important part of the study of the electrical properties of materials. Electrical measurements using alternating current (ac) impedance is a powerful technique to study diffusing species in metal oxides as well as polymers. Three case studies are being presented here whereby the electrical properties of LiTaO3, Poly[2-methoxy-5-(2’-ethylhexyloxy)-(p-phenylenevinylene)] (MEH-PPV) and its composite are being studied using the same ac impedance technique. LiTaO3 is a metal oxide while MEH-PPV is a polymer. They are very different and therefore present very good examples for the versatility and power of ac impedance method. Electrical parameters such as conductivity and conduction behaviours of the conducting species can be extracted from the studies. The kinetics of the diffusing species can be elucidated by using proper analytical techniques.

• Periodical: Defect and Diffusion Forum (Volumes 312-315)
• Pages: 1216-1221
• DOI: https://doi.org/10.4028/www.scientific.net/DDF.312-315.1216
• Online since: April 2011
• Authors: Norlida Kamarulzaman, Roshidah Rusdi, Nor Diyana Abdul Aziz, Lili Widarti Zainudin, Zurina Osman
• Keywords: AC Impedance, Arrhenius, Electron Diffusion, Ionic Diffusion, Mobility

References

[1] A. V. Ven, G. Ceder: J. Power Sources Vol. 97-98 (2001), p.529.

[2] M.D. Ingram, A.H.J. Robertson: Solid State Ionics Vol. 94 (1997), p.49.

[3] F. Yakuphanoglu: J. Phy. Chem. Solids Vol. 69 (2008), p.949.

[4] F.E. Ahmed, O.A. Yassin: Microelectronics J. Vol. 38 (2007), p.834.

[5] Handbook of Chemistry and physics, Ed. D.R. Lide, CRC Press Inc., USA.

[6] P.G. Clem, M. Rodriguez, J.A. Voigt and C.S. Ashley: U.S. Patent 6, 231, 666. (2001).

[7] R.L. Hurt and J.R. Macdonald: Solid State Ionics Vol. 20 (1986), p.111.

[8] E. Johansson and S. Larsson: Synthetic Metals Vol. 144 (2004), p.183.