Conference proceeding
Magnetic field effects on current, electroluminescence and photocurrent in polyfluorene organic light emitting diodes
Organic Optoelectronics and Photonics II, Vol.6192(1), pp.619211-6192110
Proceedings of SPIE
01/01/2006
DOI: 10.1117/12.663330
Abstract
We report on the experimental observation of large magnetoresistance in polyfluorene organic light-emitting diodes (OLEDs). Very similar magnetic field effects (MFEs) of comparable magnitude were also observed in electroluminescence and photocurrent measurements. We provide a comprehensive overview of these three types of MFE. To the best of our knowledge, the mechanism causing these MFE is currently not known. Moreover, we show that these experiments do not allow determination whether the MFE acts on the carrier density or carrier mobility making any attempt of explaining it ambiguous. As a remedy, we performed magnetoresistance measurements in hole-only OLEDs and show that the MFE acts on the carrier mobility rather than carrier density.
Details
- Title: Subtitle
- Magnetic field effects on current, electroluminescence and photocurrent in polyfluorene organic light emitting diodes
- Creators
- Govindarajan Veeraraghavan - University of IowaTho Duc Nguyen - University of IowaYugang Sheng - University of IowaOmer Mermer - University of IowaMarkus Wohlgenannt - University of Iowa
- Contributors
- P L Heremans (Editor)M Muccini (Editor)E A Meulenkamp (Editor)
- Resource Type
- Conference proceeding
- Publication Details
- Organic Optoelectronics and Photonics II, Vol.6192(1), pp.619211-6192110
- Publisher
- Spie-Int Soc Optical Engineering
- Series
- Proceedings of SPIE
- DOI
- 10.1117/12.663330
- ISSN
- 0277-786X
- Number of pages
- 10
- Grant note
- ECS 04-23911 / NSF; National Science Foundation (NSF)
- Language
- English
- Date published
- 01/01/2006
- Academic Unit
- IIHR--Hydroscience and Engineering; Physics and Astronomy
- Record Identifier
- 9984428804702771
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