Large magnetoresistance at room temperature in semiconducting polymer sandwich devices
Top Cited Papers
Open Access
- 1 December 2004
- journal article
- Published by IOP Publishing in New Journal of Physics
- Vol. 6, 185
- https://doi.org/10.1088/1367-2630/6/1/185
Abstract
We report on the discovery of a large, room temperature magnetoresistance (MR) effect in polyfluorene sandwich devices in weak magnetic fields. We characterize this effect and discuss its dependence on voltage, temperature, film thickness, electrode materials, and (unintentional) impurity concentration. We usually observed negative MR, but positive MR can also be achieved under high applied electric fields. The MR effect reaches up to 10% at fields of 10mT at room temperature. The effect shows only a weak temperature dependence and is independent of the sign and direction of the magnetic field. We find that the effect is related to the hole current in the devices.Keywords
All Related Versions
This publication has 15 references indexed in Scilit:
- Large magnetic field effects in organic light emitting diodes based on tris(8-hydroxyquinoline aluminum) (Alq3)/N,N′-Di(naphthalen-1-yl)-N,N′diphenyl-benzidine (NPB) bilayersJournal of Vacuum Science & Technology A, 2004
- Giant magnetoresistance in organic spin-valvesNature, 2004
- Organic luminescent devices and magnetoelectronicsJournal of Applied Physics, 2003
- Transport Properties of Conjugated PolymersPublished by Springer Nature ,2003
- Room temperature spin polarized injection in organic semiconductorSolid State Communications, 2002
- Organic Thin Film Transistors for Large Area ElectronicsAdvanced Materials, 2002
- Plastic Solar CellsAdvanced Functional Materials, 2001
- Formation cross-sections of singlet and triplet excitons in π-conjugated polymersNature, 2001
- Electroluminescence in conjugated polymersNature, 1999
- High brightness and efficiency blue light-emitting polymer diodesApplied Physics Letters, 1998