Hostname: page-component-586b7cd67f-dlnhk Total loading time: 0 Render date: 2024-11-25T15:30:24.147Z Has data issue: false hasContentIssue false
  • English
  • Français

Magnetic Field Sensors based on Magnetoresistance Effect in Organic Semiconductor Sandwich Devices

Published online by Cambridge University Press:  26 February 2011

Govindarajan Veeraraghavan ,
Ömer Mermer ,
Yugang Sheng ,
Tho Duc Nguyen ,
Thomas Lee Francis  and
Markus Wohlgenannt
Govindarajan Veeraraghavan
Affiliation:
[email protected], University of Iowa, 188 IATL, University of Iowa, Iowa City, Iowa, 52246, United States
Ömer Mermer
Affiliation:
[email protected], University of Iowa, Department of Physics and Astronomy, United States
Yugang Sheng
Affiliation:
[email protected], University of Iowa, Department of Physics and Astronomy, United States
Tho Duc Nguyen
Affiliation:
[email protected], University of Iowa, Department of Physics and Astronomy
Thomas Lee Francis
Affiliation:
[email protected], University of Iowa, OMR sensors Inc., Department of Electrical and Computer Engineering, United States
Markus Wohlgenannt
Affiliation:
[email protected], University of Iowa, Department of Physics and Astronomy, United States
Get access

Abstract

We describe magnetic field sensors based on a recently discovered magnetoresistance (MR) effect in nonmagnetic organic semiconductor sandwich devices. The MR effect reaches up to 10% in a magnetic field of 10 mT at room temperature. We perform an extensive experimental characterization of this effect. We found that the MR effect is only weakly temperature dependent and does not depend on sign and direction of the applied magnetic field. We also measured the device response to alternating magnetic fields up to 100 kHz. To the best of our knowledge, the discovered MR effect is not adequately described by any of the MR mechanisms known to date.

Keywords

magnetoresistance (transport)organicsensor
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 906: Symposium HH – Magnetic Sensors and Sensing Systems , 2005 , 0906-HH03-07
Copyright
Copyright © Materials Research Society 2006

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 Friend, R. H. et al. , Nature, 397, 121–128, 1999.Google Scholar
2 Brabec, C. J., Sariciftci, N. S. and Hummelen, J. C., Adv. Func. Mat., 11, 15–26, 2001.Google Scholar
3 Dimitrakopoulos, C. D. and Malenfant, P. R. L., Adv. Mat., 14, 99–117, 2002.Google Scholar
4 Kalinowski, J. et al. , Chem. Phys. Lett., 380, 710, 2003.Google Scholar
5 Davis, A. H. and Bussmann, K., J. Vac. Sci. & Techn. A, 22, 1885–1891, 2004.Google Scholar
6 Yoshida, Y.,Fujii, A., Ozaki, M., Yoshino, K., and Frankevich, E. L., Mol. Cryst. Liqu. Cryst. 426, 17, 2005.Google Scholar
7 Francis, T. L., Mermer, O., Veeraraghavan, G., and Wohlgenannt, M., New J. Phys., 6, 185, 2004.Google Scholar
8 Mermer, O., Veeraraghavan, G., Francis, T. L., Sheng, Y., Nguyen, D. T. and Wohlgenannt, M., Physical Review B, 72, 205202, 2005 Google Scholar
9 Mermer, O., Veeraraghavan, G., Francis, T. L. and Wohlgenannt, M., Solid State Commun. 134, 631, 2005.Google Scholar
10 Veeraraghavan, G. et al. in Organic Thin-Film Electronics, edited by Arias, A.C., Tessler, N., Burgi, L., and Emerson, J.A. (Mater. Res. Soc. Symp. Proc. 871E, Warrendale, PA, 2005), I1.8.Google Scholar
11 At the date this paper was written, URLs or hotlinks referenced herein were deemed to be useful supplementary material to this paper. Neither the author nor the MRS warrants or assumes liability for the content or availability of URLs referenced in this paper.Google Scholar
12 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., et al. , Nature 401, 685 (1999).Google Scholar
13 Pope, Martin and Swenberg, Charles E., Electronic Processes in organic crystals and polymers, 2nd Edition (Oxford Science publications, New York, 1999) p1118.Google Scholar