1887
banner image
No data available.
Please log in to see this content.
You have no subscription access to this content.
No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
f
High-efficiency endothermic energy transfer in polymeric light-emitting devices based on cyclometalated Ir complexes
Rent:
Rent this article for
Access full text Article
/content/aip/journal/apl/92/2/10.1063/1.2830618
1.
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).
http://dx.doi.org/10.1038/25954
2.
2.M. A. Baldo, D. F. O’Brien, M. E. Thompson, and S. R. Forrest, Phys. Rev. B 60, 14422 (1999).
http://dx.doi.org/10.1103/PhysRevB.60.14422
3.
3.C. Adachi, R. C. Kwong, P. Djurovich, V. Adamovich, M. A. Baldo, M. E. Thompson, and S. R. Forrest, Appl. Phys. Lett. 79, 2082 (2001).
http://dx.doi.org/10.1063/1.1400076
4.
4.H. Z. Xie, M. W. Liu, O. Y. Wang, X. H. Zhang, C. S. Lee, L. S. Hung, S. T. Lee, P. F. Teng, H. L. Kwong, H. Zheng, and C. M. Che, Adv. Mater. (Weinheim, Ger.) 13, 1245 (2001).
http://dx.doi.org/10.1002/1521-4095(200108)13:16<1245::AID-ADMA1245>3.0.CO;2-J
5.
5.H. M. Liu, J. He, P. F. Wang, H. Z. Xie, and X. H. Zhang, Appl. Phys. Lett. 87, 221103 (2005).
http://dx.doi.org/10.1063/1.2137893
6.
6.S. Jung, Y. Kang, H. S. Kim, Y. H. Kim, C. L. Lee, J. J. Kim, S. K. Lee, and S. K. Kwon, Eur. J. Inorg. Chem. 2004, 3415 (2004).
http://dx.doi.org/10.1002/ejic.200400114
7.
7.M. A. Baldo and S. R. Forrest, Phys. Rev. B 62, 10958 (2000).
http://dx.doi.org/10.1103/PhysRevB.62.10958
8.
8.W. E. Ford and M. A. J. Rogers, J. Phys. Chem. 96, 2917 (1992).
http://dx.doi.org/10.1021/j100186a026
9.
9.C. Adachi, R. C. Kwong, P. Djurovich, V. Adamovich, M. A. Baldo, M. E. Thompson, and S. R. Forrest, Appl. Phys. Lett. 79, 2082 (2001).
http://dx.doi.org/10.1063/1.1400076
10.
10.S. L. Chew, C. S. Lee, S. T. Lee, P. F. Wang, J. He, W. Li, Jie Pan, X. H. Zhang, and H. Kwong, Appl. Phys. Lett. 88, 093510 (2006).
http://dx.doi.org/10.1063/1.2178468
11.
11.G. Rippen, G. Kaufmann, and W. Klöpffer, J. Chem. Phys. 65, 272 (1976).
http://dx.doi.org/10.1063/1.432820
12.
12.G. Rippen, G. Kaufmann, and W. Klöpffer, Chem. Phys. 52, 165 (1980).
http://dx.doi.org/10.1016/0301-0104(80)85194-9
13.
13.S. C. Lo, G. J. Richards, J. P. J. Markham, E. B. Namdas, S. Sharma, P. L. Burn, and I. D. W. Samuel, Adv. Funct. Mater. 15, 1451 (2005).
http://dx.doi.org/10.1002/adfm.200400560
14.
14.N. J. Turro, Modern Molecular Photochemistry (Benjamin, New York/Cummings, London, 1978), Chap. 9.
15.
15.Y. Kawamura, S. Yanagida, and S. R. Forrest, J. Appl. Phys. 92, 87 (2002).
http://dx.doi.org/10.1063/1.1479751
16.
journal-id:
http://aip.metastore.ingenta.com/content/aip/journal/apl/92/2/10.1063/1.2830618
Loading
View: Figures

Figures

Image of FIG. 1.

Click to view

FIG. 1.

PL spectra of different Ir complexes in . Inset: molecular structures of the Ir complexes.

Image of FIG. 2.

Click to view

FIG. 2.

(a) characteristics of the PLEDs with different doping levels. Device structure is ; (b) and characteristics of the LEDs with different doping levels.

Image of FIG. 3.

Click to view

FIG. 3.

(a) characteristics of the LEDs with different concentrations. The device structure was ; (b) and characteristics of the LEDs with different concentrations.

Loading

Article metrics loading...

/content/aip/journal/apl/92/2/10.1063/1.2830618
2008-01-14
2014-04-23

Abstract

We report polymericlight-emitting diodes(PLEDs) made from pinene-substituted iridium(III) phosphorescent dopants: tris(5-(4-difluoro phenyl)-10,10-dimethyl-4-aza-tricycloundeca-2,4,6-triene) iridium (III) and tris(5-(2,4-difluorophenyl)-10,10-dimethyl-4-aza-tricycloundeca-2,4,6-triene) iridium (III) . The pinene substitution introduces steric hindrance to molecular structure of the dopant that reduces triplet-triplet annihilation between dopants and consequently enhances device performance. Via endothermic energy transfer from poly(vinylcarbazole) to and , a peak electroluminescent efficiency of or at or doped and solution-processed PLEDs have been obtained. These values represent significant improvement in performance over previously reported endothermic energy-transfer based electrophosphorescent devices.

Loading

Full text loading...

/deliver/fulltext/aip/journal/apl/92/2/1.2830618.html;jsessionid=9ons8m5cu4ncq.x-aip-live-02?itemId=/content/aip/journal/apl/92/2/10.1063/1.2830618&mimeType=html&fmt=ahah&containerItemId=content/aip/journal/apl
true
true
This is a required field
Please enter a valid email address
752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: High-efficiency endothermic energy transfer in polymeric light-emitting devices based on cyclometalated Ir complexes
http://aip.metastore.ingenta.com/content/aip/journal/apl/92/2/10.1063/1.2830618
10.1063/1.2830618
SEARCH_EXPAND_ITEM