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Steady State Photoconductivity in Conjugated Polymers

Published online by Cambridge University Press:  21 March 2011

C. D. Sitch ,
D. P. Halliday  and
A. P. Monkman
C. D. Sitch
Affiliation:
Organic Electroactive Materials Research Group, Department of Physics, University of Durham, South Road, Durham. DH1 3LE., UK
D. P. Halliday
Affiliation:
Organic Electroactive Materials Research Group, Department of Physics, University of Durham, South Road, Durham. DH1 3LE., UK
A. P. Monkman
Affiliation:
Organic Electroactive Materials Research Group, Department of Physics, University of Durham, South Road, Durham. DH1 3LE., UK
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Abstract

Visible and ultraviolet photoconductivity (PC) measurements have been performed on thick (7[.proportional]m) and thin (170nm) films of poly[2-methoxy, 5 ethyl (2' hexyloxy) paraphenylenevinylene] (MEH-PPV) sandwiched between indium tin oxide (ITO) and semitransparent gold (Au) electrodes. PC spectra were obtained for samples under different bias polarities and for illumination through the ITO electrode and through the Au electrode. The results obtained indicate that the absorbed photons form excitons that dissociate extrinsically at or near the electrodes to form hole polarons or intrinsically at higher photon energies in the bulk polymer.

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References

REFERENCES

1. Friend, R.H., Gymer, R.W., Holmes, A.B., Burroughes, J.H., Marks, R.N., Taliani, C., Bradley, D.D.C., Santos, D.A. Dos, Bredas, J.L., Logdlund, M., and Salaneck, W.R., Nature, 397 121–128 (1999).Google Scholar
2. Osterbacka, R., Juska, G., Arlauskas, K., Pal, A.J., Kalman, K.M., and Stubb, H., J. Appl. Phys., 84 3359–3363 (1998).Google Scholar
3. Wei, X., Raikh, M., Vardeny, Z.V., Yang, Y., and Moses, D., 49 17480–17483 (1994).Google Scholar
4. Kim, K., Lee, D.W., and Jin, J.I., Synth. Met., 114 49–56 (2000).Google Scholar
5. Marks, R.N., Bradley, D.D.C., Jackson, R.W., Burn, P.L., and Holmes, A.B., 57 4128–4133 (1993).Google Scholar
6. Barth, S. and Bassler, H., 79 4445–4448 (1997).Google Scholar
7. Barth, S., Bassler, H., Rost, H., and Horhold, H.H., Phys. Rev. B-Condens Matter, 56 3844 (1997).Google Scholar
8. Barth, S., Bassler, H., Wehrmeister, T., and Mullen, K., 106 321–327 (1997).Google Scholar
9. Barth, S., Bassler, H., Scherf, U., and Mullen, K., 288 147–154 (1998).Google Scholar
10. Feller, F. and Monkman, A.P., Phys. Rev. B, 61 13560–13564 (2000).Google Scholar
11. Arkhipov, V.I., Emelianova, E.V., Kadashchuk, A., and Bassler, H., Chem. Phys., 266 97–108 (2001).Google Scholar
12. Bassler, H., 175 15–56 (1993).Google Scholar
13. Rohlfing, M. and Louie, S.G., Phys. Rev. Lett., 82 1959–1962 (1999).Google Scholar