Hostname: page-component-848d4c4894-2pzkn Total loading time: 0 Render date: 2024-05-19T04:18:28.176Z Has data issue: false hasContentIssue false

High Mobilities in Organic Molecular Crystals

Published online by Cambridge University Press:  21 March 2011

Jan Hendrik Schön
Affiliation:
Bell Laboratories, Lucent Technologies, 600 Mountain Ave., Murray Hill, NJ 07974
Steffen Berg
Affiliation:
Bell Laboratories, Lucent Technologies, 600 Mountain Ave., Murray Hill, NJ 07974
Christian Kloc
Affiliation:
Bell Laboratories, Lucent Technologies, 600 Mountain Ave., Murray Hill, NJ 07974
Bertram Batlogg
Affiliation:
Bell Laboratories, Lucent Technologies, 600 Mountain Ave., Murray Hill, NJ 07974
Get access

Abstract

The charge transport in high quality single crystals of various organic molecular semiconductors is investigated. Band-like motion in delocalized states is observed in various polyacene and oligothiophene single crystals. The electric field dependence of the mobility is ascribed to acoustic phonon scattering. Furthermore, hot carrier effects can be observed at low temperatures and high electric fields. Band-like transport changes over to hopping motion when the effective bandwidth shrinks, i.e. at high temperatures or in crystallographic directions of small molecular orbital overlap.

Type
Research Article
Copyright
Copyright © Materials Research Society 1999

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1. Brown, A. R., Pomp, A., Hart, C. M., Leeuw, D. M. de, Science 270, 972 (1995).Google Scholar
2. Dodabalapur, A., Laquindanum, J., Katz, H. E., Bao, Z., Appl. Phys. Lett. 69, 4227 (1996).Google Scholar
3. Klauk, H., Gundlach, D. J., Nichols, J. A., Jackson, T. N., IEEE Trans. Electr. Dev. 46, 1258 (1999).Google Scholar
4. Kloc, Ch., Simpkins, P. G., Siegrist, T., Laudise, R. A., J. Cryst. Growth 182, 416 (1997).Google Scholar
5. Schön, J. H., Kloc, Ch., Laudise, R. A., Batlogg, B., Phys. Rev. B 58, 12952(1998).Google Scholar
6. Schön, J. H., Kloc, Ch., Laudise, R. A., Batlogg, B., Appl. Phys. Lett. 73, 3574 (1998).Google Scholar
7. Warta, W. and Karl, N., Phys. Rev. B 32, 1172 (1985).Google Scholar
8. Appel, J., Polarons in Solid State Physics Vol. 21, eds. Seitz, F., Turnbull, D., and Ehrenreich, H. (Academic Press, New York 1968).Google Scholar
9. Silinsh, E. A. and Capek, V., Organic Molecular Crystals : Interaction Localization, and Transport Phenomena (AIP Press, New York 1994).Google Scholar
10. Siegrist, T., Kloc, Ch., Laudise, R. A., Katz, H. E., Haddon, R. C., Adv. Mater. 10, 379 (1998).Google Scholar
11. Sirringhaus, 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., Leeuw, D. M. de, Nature 401, 685 (1999).Google Scholar
12. Schön, J.H., Kloc, Ch., Batlogg, B., unpublished.Google Scholar
13. Karl, N., Organic Semiconductors, in Landolt-Börnstein, New Series Vol. 17 : Semiconductors (eds. Madelung, O., Schulz, M., and Weiss, H.), Subvolume 17i, (Springer, Berlin 1985) pp. 106218.Google Scholar