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Electrophosphorescent Light Emitting Devices Using Mixed Ligand Ir(III) Complexes

Published online by Cambridge University Press:  15 March 2011

Hae Won Lee,
R. R. Das,
Chang-Lyoul Lee,
Yong-Young Noh and
Jang-Joo Kim
Hae Won Lee
Affiliation:
Department of Materials Science and Engineering, Kwangju Institute of Science and Technology (K-JIST), 1 Oryong-dong, Buk-gu, Kwangju 500-712, Korea
R. R. Das
Affiliation:
Department of Materials Science and Engineering, Kwangju Institute of Science and Technology (K-JIST), 1 Oryong-dong, Buk-gu, Kwangju 500-712, Korea
Chang-Lyoul Lee
Affiliation:
Department of Materials Science and Engineering, Kwangju Institute of Science and Technology (K-JIST), 1 Oryong-dong, Buk-gu, Kwangju 500-712, Korea
Yong-Young Noh
Affiliation:
Department of Materials Science and Engineering, Kwangju Institute of Science and Technology (K-JIST), 1 Oryong-dong, Buk-gu, Kwangju 500-712, Korea
Jang-Joo Kim
Affiliation:
Department of Materials Science and Engineering, Kwangju Institute of Science and Technology (K-JIST), 1 Oryong-dong, Buk-gu, Kwangju 500-712, Korea
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Abstract

We have fabricated phosphorescent light emitting devices using mixed ligand bisorthometalated Ir(III) complexes, chlorobis-(2-phenylpyridinato-N,C 2 ')pyridineiridium(III) [Ir(Cl)(ppy)2(py)] and chlorobis-(2-phenylpyridinato-N,C 2')triphenylphosphine iridium(III) [Ir(Cl)(ppy)2P(Ph)3] chlorobis-(2-phenylpyridinato-N,C 2')tri-n-butylphosphine iridium(III) [Ir(Cl)(ppy)2P(n-Bu)3], where ppy is the orthometalating ligand. These complexes vary in their HOMO (highest occupied molecular orbital), LUMO (lowest unoccupied molecular orbital) and emissive states in accordance with the φ-accepting abilities of the non-orthometalating ligands. The lifetimes and EL spectrum of the devices were studied and compared.

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References

REFERENCE

1. Lee, C. L., Lee, K. B. and Kim, J.- J., Appl. Phys. Lett. 77, 2280 (2000).Google Scholar
2. Lamansky, S., Djurovitch, P., Murphy, D., Abdel-Razzaq, F., Kwong, R., Tsyba, I., Bortz, M., Mui, B., Bau, R. and Thompson, M. E., Inorg.Chem. 40, 1704 (2001).Google Scholar
3. Nonoyama, Matzuo, J. Organometal. Chem. 82, 271 (1974).Google Scholar
4. Nonoyama, Matzuo, J. Organometal. Chem. 86, 263 (1975).Google Scholar
5. Kulikova, M. V., Balashev, K. P., Kvam, P.I. and Songstad, J., Russian Journal of General Chemistry. 69, 1521 (1999).Google Scholar
6. Calogero, G., Giuffrida, G., Serroni, S., Ricevuto, V. and Campagna, S., Inorg. Chem. 34, 541 (1995).Google Scholar
7. Maestri, M., Balzani, V., Deuschel-cornioley, C. and Zelewsky, A.Von, Adv. Photochem. 17, 1 (1992).Google Scholar
8. Lever, A. B. P., Inorganic Electronic spectroscopy, Second Edition, Elsevier, New York, 1984, p177.Google Scholar
9. King, K. A., Spellane, P. J. and Watts, R. J., J. Am. Chem. Soc. 107, 143 (1985).Google Scholar
10. King, K. A., Finlayson, M. F., Spellane, P. J. and Watts, R. J., Sci. Pap. Inst. Phys. Chem.Res. 78, 97 (1984).Google Scholar