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Non-linear charge transport in polythiophene under high AC field

  • Jan Obrzut (a1), Tatiana Psurek (a2), C. K. Chiang (a3) and Dean M. DeLongchamp (a4)

Abstract

Complex impedance and conductivity were measured for regioregular poly(3-hexylthiophene) (P3HT) at alternating current (AC) voltages using a waveform technique. The waveforms were Fourier transformed from time domain to frequency domain and analyzed at fundamental and higher order harmonic frequencies. It was found that the impedance of the semi-conducting P3HT decreases with increasing electric field strength. The non-linear charge transport is dominated by a third harmonic response that originates from extended polarizability of π-type electronic states. The third order non-linear conductivity can be used to quantify the effect of an electric field on the conduction mechanism and to correlate the intrinsic charge carriers mobility with molecular structure.

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1. Horowitz, G., in Semi-conducting Polymers, edited by Hadziioannou, G. and Van Hutten, P.F, (Wiley-VCH, New York, 2000) p. 463.
2. Katz, H. E., Dodabalapur, A., Bao, Z., in Handbook of Oligo and Polythiophenes, edited by Fichou, D., (Wiley-VCH, New York, 1999) p. 459.
3. Sirringfaus, H., Brown, P. J., Friend, R. H., Nielsen, M.M., Bechgaard, K., Langeveld-Voss, B. M. W., Spiering, A. J. H., Janssen, R. A. J., Meijer, E. W., Herwig, P., De Leeuw, D. M., Nature, 401, 685 (1999).
4. Burin, A. L., Ratner, M. A., J. Polym. Sci, B 41, 2601 (2003).
5. Furukawa, T., Nakajima, K., Koizumi, T., and Date, M., Jap. J. Appl. Phys., 26, 1039 (1987).
6. Gu, G., Hui, P. M., Yu, K., Physica B 279, 62 (2000).
7. Levy, O., Bergman, D. J., Stroud, D., Physical Rev. E, 52, 3184 (1995).
8. Huang, J. P., Yu, K. W., Karttunen, M., Phys. Rev. E, 70 11403–1 (2004).
9. Obrzut, J. and Kano, K., IEEE Trans. Instr. Meas., 54, 1570 (2005).
10. Simmons, J. G., Phys Rev., 155, 657 (1967).
11. Campos, M., Cavalcante, E. M., and Kalinowski, J., J. Polym. Sci., B 34, 623 (1996).
12.Electrical Transport in Solids with Particular Reference to Organic Semiconductors”, Kao, K. C., Hwang, W., Chapter 5.3., pp. 303 – 309, Pergamon Press, NY, 1981.

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