Charge-carrier balance and color purity in polyfluorene polymer blends for blue light-emitting diodes

Advanced Functional Materials

Volumn 22, Issue 1, 2012, Pages 144-150

  Lu, Li Ping ^a   Kabra, Dinesh ^a   Johnson, Kerr ^a   Friend, Richard H ^a  

^a UNIVERSITY OF CAMBRIDGE   (United Kingdom)

Author keywords

charge carrier balance; color purity; hole traps; PLEDs; polyfluorenes

Indexed keywords

BLUE LIGHT-EMITTING; CHARGE-CARRIER BALANCE; COLOR PURITY; EMITTING MATERIAL; EXTERNAL QUANTUM EFFICIENCY; FLUORESCENCE DECAY TIME; HOLE-INJECTING ELECTRODES; HOLE-TRANSPORTING MATERIALS; INVERTED DEVICES; LUMINANCE EFFICIENCY; OPTICAL STUDY; PHOTOLUMINESCENCE QUANTUM YIELDS; PLEDS; POLYFLUORENES; SINGLE CARRIER; SPECTROSCOPIC MEASUREMENTS; ZNO;

COLOR; EFFICIENCY; FLUORESCENCE; HOLE TRAPS; LIGHT EMISSION; LIGHT EMITTING DIODES; MOLYBDENUM OXIDE; POLYMER BLENDS; QUANTUM YIELD; ZINC OXIDE;

QUANTUM EFFICIENCY;

EID: 84855311206     PISSN: 1616301X     EISSN: 16163028     Source Type: Journal    
DOI: 10.1002/adfm.201101892     Document Type: Article

References (42)

1. J. H. Burroughes, D. D. C. Bradley, A. R. Brown, R. N. Marks, K. Mackey, R. H. Friend, P. L. Burn, A. B. Holmes, Nature 1990, 347, 539.
2. E. J. W. List, R. Guentner, P. S. de Freitas, U. Scherf, Adv. Mater. 2002, 14, 374.
3. M. H. Song, D. Kabra, B. Wenger, R. H. Friend, H. J. Snaith, Adv. Funct. Mater. 2009, 19, 2130.
4. A. W. Grice, D. D. C. Bradley, M. T. Bernius, M. Inbasekaran, W. W. Wu, E. P. Woo, Appl. Phys. Lett. 1998, 73, 629.
5. M. Gross, D. C. Müller, H. G. Nothofer, U. Scherf, D. Neher, C. Bräuchle, K. Meerholz, Nature, 2000, 405, 661.
6. E. Zojer, A. Pogantsch, E. Hennebicq, D. Beljonne, J. L. Bredas, P. S. de Freitas, U. Scherf, E. J. W. List, J. Chem. Phys. 2002, 117, 6794.
7. M. Arif, S. Mukhopadhyay, S. Ramasesha, S. Guha, Eur. Phys. Lett. 2009, 87, 57008.
8. Conjugated polymers having spiro centers and their use as electroluminescence materials, U.S. Patent 5,621,131 (1997)
9. H. T. Nicolai, A. Hof, J. L. M. Oosthoek, P. W. M. Blom, Adv. Funct. Mater. 2011, 21, 1505.
10. T. Miteva, A. Meisel, W. Knoll, H. G. Nothofer, U. Scherf, D. C. Muller, K. Meerholz, A. Yasuda, D. Neher, Adv. Mater. 2001, 13, 565.
11. J. Li, Y. Hirayama, T. Sano, T. Tomita, H. Fujii, K. Wakisaka, Thin Solid Films 2006, 515, 2686.
12. S.-R. Tseng, S.-Y. Li, H.-F. Meng, Y.-H. Yu, C.-M. Yang, H.-H. Liao, S.-F. Horng, C.-S. Hsu, Org. Elec. 2008, 9, 279.
13. Md. A. Karim, Y.-R. Cho, J. S. Park, k.-J. Yoon, S. J. Lee, S.-H. Jin, G.-D. Lee, Y.-S. Gal, Macromol. Res. 2008, 16, 337.
14. S.-F. Lim, R. H. Friend, I. D. Rees, J. Li, Y. Ma, K. Robinson, A. B. Holmes, E. Hennebicq, D. Beljonne, F. Cacialli, Adv. Funct. Mater. 2005, 15, 981.
15. S. Setayesh, A. C. Grimsdale, T. Weil, V. Enkelmann, K. Mullen, F. Meghdadi, E. J. W. List, G. Leising, J. Am. Chem. Soc. 2001, 123, 946.
16. a) D. Kabra, L.-P. Lu, M. H. Song, H. J. Snaith, R. H. Friend, Adv. Mater. 2010, 22, 3194
17. b) M. C. Gwinner, R. D. Pietro, Y. Vaynzof, K. J. Greenberg, P. K. H. Ho, R. H. Friend, H. Sirringhaus, Adv. Func. Mater. 2011, 21, 1432
18. c) D. Kabra, M. H. Song, B. Wenger, R. H. Friend, H. J. Snaith, Adv. Mater. 2008, 20, 3447.
19. M. Kroeger, S. Hamwi, J. Meyer, T. Riedl, W. Kowalsky, A. Kahn, Org. Elec. 2009, 10, 932.
20. Y. Vaynzof, D. Kabra, L. L. Chua, R. H. Friend, Appl. Phys. Lett. 2011, 98, 113306.
21. a) M. Redecker, D. D. C. Bradley, M. Inbasekaran, W. W. Wu, E. P. Woo, Adv. Mater. 1999, 11, 241
22. b) J.-S. Kim, P. K. H. Ho, C. E. Murphy, R. H. Friend, Macromolecules 2004, 37, 2861.
23. M. Grell, D. D. C. Bradley, G. Ungar, J. Hill, K. S. Whitehead, Macromolecules 1999, 32, 5810.
24. a) A. C. Morteani, R. H. Friend, C. Silva, Electronic processes at semiconductor polymer heterojunctions (Eds., K. Müllen, U. Scherf,), Organic Light Emitting Devices: Synthesis, Properties and Applications, Wiley-VCH, Weinheim 2006
25. b) A. C. Morteani, R. H. Friend, C. Silva, Chem. Phys. Lett. 2004, 391, 81.
26. M. A. Lambert, P. Mark, Current injection in solids, Academic Press, New York, 1970.
27. W. F. Pasveer, J. Cottaar, C. Tanase, R. Coehoorn, P. A. Bobbert, P. W. M. Blom, D. M. de Leeuw, M. A. Michels, Phys. Rev. Lett. 2005, 94, 206601.
28. R. I. Fran, J. G. Simmons, J. Appl. Phys. 1967, 38, 832.
29. V. D. Mihailetchi, P. W. M. Blom, J. C. Hummelen, M. T. Rispens, J. Appl. Phys. 2003, 94, 6849.
30. J. Hwang, E.-G. Kim, J. Liu, J.-L. Brédas, A. Duggal, A. Kahn, J. Phys. Chem. C 2007, 111, 1378.
31. F. Laquai, G. Wegner, C. Im, H. Bassler, S. Heun, J. Appl. Phys. 2006, 99, 023712.
32. F. Montilla, R. Mallavia, Adv. Funct. Mater. 2007, 17, 71.
33. F. B. Dias, M. Maiti, S. I. Hintschich, A. P. Monkman, J. Chem. Phys. 2005, 122, 054904.
34. V. N. Bliznyuk, S. A. Carter, J. C. Scott, G. Klarner, R. D. Miller, D. C. Miller, Macromolecules 1999, 32, 361.
35. K. Murata, S. Cina, N. C. Greenham, Appl. Phys. Lett. 2001, 79, 1193.
36. H. J. Bolink, E. Coronado, D. Repetto, M. Sessolo, E. M. Barea, J. Bisquert, G. Garcia-Belmonte, J. Prochazka, L. Kavan, Adv. Funct. Mater. 2008, 18, 145.
37. M. K. Fung, S. L. Lai, S. N. Bao, C. S. Lee, S. T. Lee, W. W. Wu, M. Inbasekaran, J. J. O'Brien, J. Vac. Sci. Technol. A 2002, 20, 911.
38. Y. Zhang, P. W. M. Blom, Appl. Phys. Lett. 2011, 98, 143504.
39. W. Brutting, H. Riel, T. Beierlein, W. Riess, J. Appl. Phys. 2001, 89, 1704.
40. F. Scheiba, N. Benker, U. Kunz, C. Roth, H. Fuess, J. Power Sources 2008, 177, 273.
41. Y. Sun, S. R. Forrest, Nat. Photon. 2008, 2, 483.
42. S. Reineke, F. Lindner, G. Schwartz, N. Seidler, K. Walzer, B. Luessem, K. Leo, Nature 2009, 439, 234.