Improved efficiency of light-emitting diodes based on polyfluorene blends upon insertion of a poly(p-phenylene vinylene) electron-confinement layer

Applied Physics Letters

Volumn 80, Issue 14, 2002, Pages 2436-2438

  Morgado, J ^a   Friend, R H ^b   Cacialli, F ^b  

^a INSTITUTO SUPERIOR TÉCNICO   (Portugal)

^b UNIVERSITY OF CAMBRIDGE   (United Kingdom)

Author keywords

[No Author keywords available]

Indexed keywords

EFFICIENCY INCREASE; ELECTROLUMINESCENCE EFFICIENCIES; EMISSIVE LAYERS; HOLE-INJECTION LAYERS; POLY(3 ,4-ETHYLENEDIOXYTHIOPHENE); POLY(P-PHENYLENEVINYLENE); POLYFLUORENE BLENDS; POLYFLUORENES; POLYSTYRENE SULFONIC ACID;

AROMATIC COMPOUNDS; EFFICIENCY; ETHYLENE; LIGHT; LIGHT EMISSION; ORGANIC POLYMERS; POLYSTYRENES;

LIGHT EMITTING DIODES;

EID: 79955988770     PISSN: 00036951     EISSN: None     Source Type: Journal    
DOI: 10.1063/1.1467981     Document Type: Article

References (30)

1. M. T. Bernius, M. Inbasekaran, J. O'Brien, and W. Wu, Adv. Mater. 12, 1737 (2000). amt ADVMEW 0935-9648
2. Y. He, S. Gong, R. Hattori, and J. Kanicki, Appl. Phys. Lett. 74, 2265 (1999). apl APPLAB 0003-6951
3. J. Morgado, E. Moons, R. H. Friend, and F. Calcialli, Adv. Mater. 13, 810 (2001). amt ADVMEW 0935-9648
4. M. Redecker, D. D. C. Bradley, M. Inbasekaran, and E. P. Woo, Appl. Phys. Lett. 73, 1565 (1998). apl APPLAB 0003-6951
5. A. J. Campbell, D. D. C. Bradley, and H. Antoniadis, Appl. Phys. Lett. 79, 2133 (2001). apl APPLAB 0003-6951
6. J. S. Kim, M. Granström, R. H. Friend, N. Johansson, W. R. Salaneck, R. Daik, W. J. Feast, and F. Cacialli, J. Appl. Phys. 84, 6859 (1998). jap JAPIAU 0021-8979
7. P. K. H. Ho, M. Granström, R. H. Friend, and N. C. Greenham, Adv. Mater. 10, 769 (1998). amt ADVMEW 0935-9648
8. Y. Cao, G. Yu, C. Zhang, R. Menon, and A. J. Heeger, Synth. Met. 87, 171 (1997). sym SYMEDZ 0379-6779
9. A. R. Brown, D. D. C. Bradley, J. H. Burroughes, R. F. Friend, N. C. Greenham, P. L. Burn, A. B. Holmes, and A. Kraft, Appl. Phys. Lett. 61, 2793 (1992). apl APPLAB 0003-6951
10. F. Cacialli, R. H. Friend, N. D. Haylett, R. Daik, W. J. Feast, D. A. dosSantos, and J. L. Brédas, Appl. Phys. Lett. 69, 3794 (1996). apl APPLAB 0003-6951
11. P. K. H. Ho, J. S. Kim, J. H. Burroughes, H. Becker, S. F. Y. Li, T. M. Brown, F. Cacialli, and R. H. Friend, Nature (London) 404, 481 (2000). nat NATUAS 0028-0836
12. B. Ruhstaller, S. A. Carter, S. Barth, H. Riel, W. Riess, and J. C. Scott, J. Appl. Phys. 89, 4575 (2001). jap JAPIAU 0021-8979
13. A. J. Pal, T. P. Östergård, R. M. Österbacka, J. Paloheimo, and H. Stubb, IEEE J. Sel. Top. Quantum Electron. 4, 137 (1998). isq IJSQEN 1077-260X
14. L.-B. Lin, R. H. Young, M. G. Mason, S. A. Jenekhe, and P. M. Borsenberger, Appl. Phys. Lett. 72, 864 (1998). apl APPLAB 0003-6951
15. M. Matsumura, A. Ito, and Y. Miyamae, Appl. Phys. Lett. 75, 1042 (1999). apl APPLAB 0003-6951
16. W.-L. Yu, Y. Cao, J. Pei, W. Huang, and A. J. Heeger, Appl. Phys. Lett. 75, 3270 (1999). apl APPLAB 0003-6951
17. D. Braun and A. J. Heeger, Appl. Phys. Lett. 58, 1982 (1991). apl APPLAB 0003-6951
18. L. S. Hung, C. W. Tang, and M. G. Mason, Appl. Phys. Lett. 70, 152 (1997). apl APPLAB 0003-6951
19. T. M. Brown, R. H. Friend, I. S. Millard, D. J. Lacey, J. H. Burroughes, and F. Cacialli, Appl. Phys. Lett. 77, 3096 (2000). apl APPLAB 0003-6951
20. T. M. Brown, R. H. Friend, I. S. Millard, D. J. Lacey, J. H. Burroughes, and F. Cacialli, Appl. Phys. Lett. 79, 174 (2001). apl APPLAB 0003-6951
21. D. J. Pinner, N. Tessler, and R. H. Friend, Synth. Met. 102, 1108 (1999). sym SYMEDZ 0379-6779
22. J. L. Brédas and A. J. Heeger, Chem. Phys. Lett. 217, 507 (1994). cph CHPLBC 0009-2614
23. A. J. Campbell, D. D. C. Bradley, and H. Antoniadis, J. Appl. Phys. 89, 3343 (2001). jap JAPIAU 0021-8979
24. T. M. Brown, J. S. Kim, R. H. Friend, F. Cacialli, R. Daik, and W. J. Feast, Appl. Phys. Lett. 75, 1679 (1999). apl APPLAB 0003-6951
25. Y. Park, V. Choong, E. Ettedgui, Y. Gao, B. R. Hsieh, T. Wehrmeister, and K. Müllen, Appl. Phys. Lett. 69, 1080 (1996). apl APPLAB 0003-6951
26. R. Stevenson, R. Riehn, R. G. Milner, D. Richards, E. Moons, D.-J. Kang, M. Blamire, J. Morgado, and F. Cacialli, Appl. Phys. Lett. 79, 833 (2001). apl APPLAB 0003-6951
27. E. Lebedev, T. Dittrich, V. Petrova-Koch, S. Karg, and W. Brütting, Appl. Phys. Lett. 71, 2686 (1997). apl APPLAB 0003-6951
28. K. Murata, S. Cinà, and N. C. Greenham, Appl. Phys. Lett. 79, 1193 (2001). apl APPLAB 0003-6951
29. Note, however, that we estimate that such effects are not sufficient to explain the efficiency increase.
30. J. Morgado, F. Cacialli, J. Grüner, N. C. Greenham, and R. H. Friend, J. Appl. Phys. 85, 1784 (1999). jap JAPIAU 0021-8979