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Applied Physics Letters / Volume 75 / Issue 1 / LASERS, OPTICS, AND OPTOELECTRONICS
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Appl. Phys. Lett. 75, 4 (1999); http://dx.doi.org/10.1063/1.124258 (3 pages)

Very high-efficiency green organic light-emitting devices based on electrophosphorescence

M. A. Baldo1, S. Lamansky2, P. E. Burrows1, M. E. Thompson2, and S. R. Forrest1

1Center for Photonics and Optoelectronic Materials (POEM), Department of Electrical Engineering and the Princeton Materials Institute, Princeton University, Princeton, New Jersey 08544
2Department of Chemistry, University of Southern California, Los Angeles, California 90089

(Received 22 April 1999; accepted 10 May 1999)

We describe the performance of an organic light-emitting device employing the green electrophosphorescent material, fac tris(2-phenylpyridine) iridium [Ir(ppy)3] doped into a 4,4′-N,N′-dicarbazole-biphenyl host. These devices exhibit peak external quantum and power efficiencies of 8.0% (28 cd/A) and 31 lm/W, respectively. At 100 cd/m2, the external quantum and power efficiencies are 7.5% (26 cd/A) and 19 lm/W at an operating voltage of 4.3 V. This performance can be explained by efficient transfer of both singlet and triplet excited states in the host to Ir(ppy)3, leading to a high internal efficiency. In addition, the short phosphorescent decay time of Ir(ppy)3 (<1 μs) reduces saturation of the phosphor at high drive currents, yielding a peak luminance of 100 000 cd/m2. © 1999 American Institute of Physics.

© 1999 American Institute of Physics

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KEYWORDS and PACS

Keywords

organic compounds, light emitting devices, electroluminescence, phosphors, triplet state

PACS

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.124258

PUBLICATION DATA

ISSN

0003-6951 (print)  
1077-3118 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

  1. M. A. Baldo, D. F. O'Brien, Y. You, A. Shoustikov, S. Sibley, M. E. Thompson, and S. R. Forrest, Nature (London) 395, 151 (1998).
  2. D. F. O'Brien, M. A. Baldo, M. E. Thompson, and S. R. Forrest, Appl. Phys. Lett. 74, 442 (1999)APPLAB000074000003000442000001.
  3. S. A. VanSlyke and C. W. Tang, US Patent No. 4,539,507 (1985).
  4. V. Cleave, G. Yahioglu, P. Le Barny, R. Friend, and N. Tessler, Adv. Mater. 11, 285 (1999). [Inspec] [ISI]
  5. K. A. King, P. J. Spellane, and R. J. Watts, J. Am. Chem. Soc. 107, 1431 (1985).
  6. K. Dedeian, P. I. Djurovich, F. O. Garces, G. Carlson, and R. J. Watts, Inorg. Chem. 30, 1685 (1991). [ISI]
  7. M. G. Colombo, T. C. Brunold, T. Riedener, H. U. Gudel, M. Fortsch, and H.-B. Burgi, Inorg. Chem. 33, 545 (1994). [ISI]
  8. E. Vander Donckt, B. Camerman, F. Hendrick, R. Herne, and R. Vandeloise, Bull. Soc. Chim. Belg. 103, 207 (1994). [ISI]
  9. H. Kanai, S. Ichinosawa, and Y. Sato, International Conference on Electroluminescence of Molecular Materials and Related Phenomena, Fukuoka, Japan, 1997.
  10. I. G. Hill and A. Kahn, J. Appl. Phys. (in press).
  11. Y. Kijima, Spring MRS, San Francisco, 1998.
  12. L. S. Hung, C. W. Tang, and M. G. Mason, Appl. Phys. Lett. 70, 152 (1997)APPLAB000070000002000152000001.
  13. G. E. Jabbour, Y. Kawabe, S. E. Shaheen, J. F. Wang, M. M. Morrell, B. Kippelen, and N. Peyghambarian, Appl. Phys. Lett. 71, 1762 (1997)APPLAB000071000013001762000001.
  14. G. Gu, D. Z. Garbuzov, P. E. Burrows, S. Venkatesh, S. R. Forrest, and M. E. Thompson, Opt. Lett. 22, 396 (1997). [ISI] [MEDLINE]
  15. B. Kippelen, G. E. Jabbour, S. E. Shaheen, M. M. Morrell, J. D. Anderson, P. Lee, E. Bellmann, S. Thayumanavan, S. Barlow, R. H. Grubbs, S. R. Marder, N. R. Armstrong, and N. Peyghambarian, Spring MRS, San Francisco, California, 1999.
  16. J. Kido and Y. Iizumi, Appl. Phys. Lett. 73, 2721 (1998)APPLAB000073000019002721000001.
  17. 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. Logdlund, and W. R. Salaneck, Nature (London) 397, 121 (1999).
  18. V. G. Kozlov, G. Parthasarathy, P. E. Burrows, and S. Forrest, Appl. Phys. Lett. 72, 144 (1998)APPLAB000072000002000144000001. [ISI]
  19. S. Hoshino and H. Suzuki, Appl. Phys. Lett. 69, 224 (1996)APPLAB000069000002000224000001. [ISI]



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