Influence of a magnetic field on the device performance of OLEDs

Proceedings of SPIE - The International Society for Optical Engineering

Volumn 6999, Issue , 2008, Pages

  Niedermeier, Ulrich ^a,b   Sarfert, Wiebke ^a   Von Seggern, Heinz ^b  

^a SIEMENS AG   (Germany)

^b DARMSTADT UNIVERSITY OF TECHNOLOGY   (Germany)

Author keywords

Degradation; Magnetic field effect; OLED; OMR; Organic magnetoresistance

Indexed keywords

CHARGE CARRIERS; COMPUTATIONAL METHODS; ELECTRIC RESISTANCE; ELECTRON DEVICES; GALVANOMAGNETIC EFFECTS; HELMET MOUNTED DISPLAYS; LANTHANUM COMPOUNDS; LIGHT EMISSION; LIGHT EMITTING DIODES; LIGHT SOURCES; MAGNETIC DEVICES; MAGNETIC FIELD MEASUREMENT; MAGNETIC FIELDS; MAGNETIC MATERIALS; MAGNETISM; MAGNETOELECTRONICS; MAGNETORESISTANCE; MICROFLUIDICS; ORGANIC LIGHT EMITTING DIODES (OLED); ORGANIC POLYMERS; PHOTOACOUSTIC EFFECT; PHOTONICS; POLYMERS; SULFATE MINERALS; WATER ANALYSIS;

BIPOLAR DEVICES; CARRIER BALANCE; CONDITIONING PROCESS; CURRENT FLOWING; DEVICE PERFORMANCES; DEVICE STRUCTURES; DRIVING VOLTAGES; EFFICIENT METHODS; ELECTRON HOLE PAIR (EHP); EXTERNAL MAGNETIC FIELDS; FIELD EFFECTS; FUNDAMENTAL MECHANISMS; INTENSE (CO); LIGHT-EMITTING POLYMER (LEP); MAGNETIC (CE); MAGNETO RESISTANCE EFFECTS; MAGNETORESISTANCE (MR) MEASUREMENT; ORGANIC LIGHT EMITTING DIODE (OLED); ORGANIC LIGHT EMITTING DIODES (OLEDS); ORGANIC OPTOELECTRONICS; RESEARCH ACTIVITIES; SMALL MOLECULES;

MAGNETIC FIELD EFFECTS;

EID: 45749132671     PISSN: 0277786X     EISSN: None     Source Type: Conference Proceeding    
DOI: 10.1117/12.780398     Document Type: Conference Paper

References (26)

1. R. H. Friend, R. W. Gymer, A. B. Holmes, J. H. Burroughes, R. N. Marks, C. Taliani, D. D. C. Bradley, D. A. Dos Santos, J. L. Bredas, M. Lögdlund, and W. R. Salaneck, "Electroluminescence in conjugated polymers", Nature 397, 121 (1999).
2. E. Frankevich, A. Lymarev, I. Sokolik, F. Karasz, S. Blumstengel, R. Baughman, H. Hörhold, "Polaron pair generation in poly(phenylene vinylenes)", Phys. Rev. B 46, 9320 (1992).
3. J. Kalinowski, M. Cocchi, D. Virgili, V. Fattori, and P. di Marco, "Magnetic field effects on organic electro-phosphorescence", Phys. Rev. B 70, 205303 (2004).
4. 3-based electroluminescent diodes", Chem. Phys. Lett. 380, 710 (2003).
5. 3)/N,N'-Di(naphthalen-1-yl)-N,N' diphenyl-benzidine (NPB) bilayers", J. Vac. Sci. Technol. A 22, 1885 (2004).
6. T. L. Francis, Ö. Mermer, G. Veeraraghavan, and M. Wohlgenannt, "Large magnetoresistance at room temperature in semiconducting polymer sandwich devices", New J. Phys. 6, 185 (2004).
7. P. A. Bobbert, T. D. Nguyen, F. W. A. van Oost, B. Koopmans, and M. Wohlgenannt, "Bipolaron mechanism for organic magnetoresistance", Phys. Rev. Lett. 99, 216801 (2007).
8. W. Wagemans, F. L. Bloom, P. A. Bobbert, M. Wohlgenannt, and B. Koopmans, "A two-site bipolaron model for organic magnetoresistance", J. Appl. Phys. 103, 07F303 (2008).
9. V. N. Prigodin, J. D. Bergeson, D. M. Lincoln, and A. J. Epstein, "Anomalous room temperature magneto-resistance in organic semiconductors", Synth. Met. 156, 757 (2006).
10. 3-based OLEDs", Phys. Rev. B 75, 094423 (2007).
11. Y. Sheng, T. D. Nguyen, G. Veeraraghavan, O. Mermer, M. Wohlgenannt, S. Qiu, and U. Scherf, "Hyperfine interaction and magnetoresistance in organic semiconductors", Phys. Rev. B 74, 045213 (2006).
12. Y. Wu, Z. Xu, B. Hu, and J. Howe, "Tuning magnetoresistance and magnetic-field-dependent electro-luminescence through mixing a strong-spin-orbital-coupling molecule and a weak-spin-orbital-coupling polymer", Phys. Rev. B 75, 035214 (2007).
13. Ö. Mermer, G. Veeraraghavan, T. Francis, Y. Sheng, T. D. Nguyen, M. Wohlgenannt, A. Köhler, M. K. Al-Suti, and M. S. Khan, "Large magnetoresistance in nonmagnetic π-conjugated semiconductor thin film devices", Phys. Rev. B 72, 205202 (2005).
14. O. Mermer, G. Veeraraghavan, T. Francis, and M. Wohlgenannt, "Large magnetoresistance at room temperature in small-molecular-weight organic semiconductor sandwich devices", Solid State Commun. 134, 631 (2005).
15. P. Desai, P. Shakya, T. Kreouzis, and W. P. Gillin, "The role of magnetic fields on the transport and efficiency of aluminum tris(8- hydroxyquinoline) based organic light emitting diodes", J. Appl. Phys. 102, 073710 (2007).
16. B. Hu and Y. Wu, "Tuning magnetoresistance between positive and negative values in organic semiconductors", Nature Materials 6, 985 (2007).
17. I. D. Parker, Y. Cao, and C. Y. Yang, "Lifetime and degradation effects in polymer light-emitting diodes", J. Appl. Phys. 85, 4 (1999).
18. P. E. Burrows, V. Bulovic, S. R. Forrest, L. S. Sapochak, D. M. McCarty, and M. E. Thompson, "Reliability and degradation of organic light emitting devices", Appl. Phys. Lett. 65, 23 (1994).
19. K. K. Lin, S. J. Chua, and S. F. Lim, "Influence of electrical stress voltage on cathode degradation of organic light-emitting diodes", J. Appl. Phys. 90, 2 (2001).
20. B. H. Cumpston and K. F. Jensen, "Electromigration of aluminum cathodes in polymer-based electro-luminescent devices", Appl. Phys. Lett. 69, 25 (1996).
21. A. Crispin, A. Jonsson, M. Fahlman, and W. Salaneck, "Aluminum- barium interfaces on some processable poly(p-phenylene vinylene) polymers studied by photoelectron spectroscopy", J. Chem. Phys. 115, 11 (2001).
22. G. C. M. Silvestre, M. T. Johnson, A. Giraldo, and J. M. Shannon, "Light degradation and voltage drift in polymer light-emitting diodes", Appl. Phys. Lett. 78, 11 (2001).
23. J. C. Scott, J. H. Kaufman, P. J. Brock, R. DiPietro, J. Salem, and J. A. Goitia, "Degradation and failure of MEH-PPV light-emitting diodes", J. Appl. Phys. 79, 5 (1996).
24. H. Aziz, Z. D. Popovic, N. X. Hu, A. M. Hor, and G. Xu, "Degradation mechanism of small-molecule-based organic light-emitting devices", Science 283, 1900 (1999).
25. E. L. Frankevich, "On mechanisms of population of spin substates of polaron pairs", Chem. Phys. 297, 315 (2004).
26. Y. Shao, G. C. Bazan, and A. J. Heeger, "Long-lifetime polymer light-emitting electrochemical cells", Adv. Mater. 19, 365 (2007).