Large magnetoresistance at room temperature in semiconducting polymer sandwich devices

M. Wohlgenannt; T.L. Francis; O. Mermer; G. Veeraraghavan

doi:10.1109/INTMAG.2005.1464058

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Conference proceeding

Large magnetoresistance at room temperature in semiconducting polymer sandwich devices

M. Wohlgenannt, T.L. Francis, O. Mermer and G. Veeraraghavan

INTERMAG Asia 2005. Digests of the IEEE International Magnetics Conference, 2005, pp.1257-1258

2005

DOI: 10.1109/INTMAG.2005.1464058

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Abstract

A thin-film-sandwich device is fabricated consisting of poly(9,9-dioctylfluorenyl-2,7-diyl) sandwiched between two electrodes to study magnetoresistance (MR) effect in semiconducting polymer OLEDs. MR measurements at room temperature for different voltages show that MR traces are independent of the temperature and the angle between film plane and applied magnetic field. However a dependence on the film thickness is observed for an increase in turn-on voltage with increasing film thickness. Hence, MR effect is a bulk rather than an (electrode) interface effect.

Electrodes

Magnetic field measurement

Magnetic films

Magnetoresistance

Organic light emitting diodes

Polymers

Semiconductivity

Semiconductor films

Temperature measurement

Voltage

Details

Title: Subtitle: Large magnetoresistance at room temperature in semiconducting polymer sandwich devices
Creators: M. Wohlgenannt - Dept. of Phys. & Astron., Iowa Univ., Iowa City, IA, USA
T.L. Francis - University of Iowa
O. Mermer - University of Iowa
G. Veeraraghavan - University of Iowa
Resource Type: Conference proceeding
Publication Details: INTERMAG Asia 2005. Digests of the IEEE International Magnetics Conference, 2005, pp.1257-1258
Publisher: IEEE
DOI: 10.1109/INTMAG.2005.1464058
ISSN: 2150-4598
eISSN: 2150-4601
Language: English
Date published: 2005
Academic Unit: Physics and Astronomy
Record Identifier: 9984428778802771

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