Lithium-aluminum contacts for organic light-emitting devices

Applied Physics Letters

Volumn 71, Issue 9, 1997, Pages 1151-1153

  Haskal, E I ^a   Curioni, A ^a   Seidler, P F ^a   Andreoni, W ^a  

^a IBM RESEARCH ZURICH   (Switzerland)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 0001092057     PISSN: 00036951     EISSN: None     Source Type: Journal    
DOI: 10.1063/1.119850     Document Type: Article

References (22)

1. C. W. Tang and S. A. VanSlyke, Appl. Phys. Lett. 51, 913 (1987).
2. T. Wakimoto, R. Murayama, H. Nakada, K. Imai, G. Sato, and M. Nomura, Polym. Reprints. Jpn. 40, 3600 (1991).
3. T. Sano, M. Fujii, Y. Nishio, Y. Hamada, and K. Shibata, Extended Abstracts, 41st Spring Meeting, Jpn. Soc. Appl. Phys. 3, 1073 (1994); T. Sano, Y. Hamada, and K. Shibata, in Proceedings of the International Symposium on Inorganic and Organic Electroluminescence, edited by R. H. Mauch and H.-E. Gumlich (Wissenschaft und Technik Verlag, Berlin, 1996), p. 249.
4. T. Sano, M. Fujii, Y. Nishio, Y. Hamada, and K. Shibata, Extended Abstracts, 41st Spring Meeting, Jpn. Soc. Appl. Phys. 3, 1073 (1994); T. Sano, Y. Hamada, and K. Shibata, in Proceedings of the International Symposium on Inorganic and Organic Electroluminescence, edited by R. H. Mauch and H.-E. Gumlich (Wissenschaft und Technik Verlag, Berlin, 1996), p. 249.
5. C. W. Tang, SID International Symposium 1996, Digest of Technical Papers, San Diego (1996), p. 181.
6. H. Tokuhisa, M. Era, T. Tsutsui, and S. Saito, Appl. Phys. Lett. 66, 3433 (1995).
7. See, for example, J. Kido, M. Kimura, and K. Nagai, Science 267, 1332 (1995); C. W. Tang, D. J. Williams, and J. C. Chang, U.S. Patent No. 5,294,870 (1994); A. Dodabalapur, L. J. Rothberg, and T. M. Miller, Electron. Lett. 30, 1000 (1994).
8. See, for example, J. Kido, M. Kimura, and K. Nagai, Science 267, 1332 (1995); C. W. Tang, D. J. Williams, and J. C. Chang, U.S. Patent No. 5,294,870 (1994); A. Dodabalapur, L. J. Rothberg, and T. M. Miller, Electron. Lett. 30, 1000 (1994).
9. See, for example, J. Kido, M. Kimura, and K. Nagai, Science 267, 1332 (1995); C. W. Tang, D. J. Williams, and J. C. Chang, U.S. Patent No. 5,294,870 (1994); A. Dodabalapur, L. J. Rothberg, and T. M. Miller, Electron. Lett. 30, 1000 (1994).
10. L. S. Hung, C. W. Tang, and M. G. Mason, Appl. Phys. Lett. 70, 152 (1997).
11. S. Tokito, K. Noda, and Y. Taga, J. Phys. D 29, 2750 (1996).
12. Y. Park, V. Choong, Y. Gao, B. R. Hsieh, and C. W. Tang, Appl. Phys. Lett. 68, 2699 (1996).
13. T. Wakimoto, S. Kawami, K. Nagayama, Y. Yonemoto, R. Murayama, J. Funaki, H. Sato, H. Nakada, and K. Imai, International Symposium on Inorganic and Organic Electroluminescence, Hamamatsu (1994), p. 77.
14. C. W. Tang and S. A. VanSlyke, U.S. Patent No. 4,885,211 (1989).
15. S. A. VanSlyke, C. H. Chen, and C. W. Tang, Appl. Phys. Lett. 69, 2160 (1996).
16. V. Choong, Y. Park, Y. Gao, T. Wehrmeister, K. Müllen, B. R. Hsieh, and C. W. Tang, Appl. Phys. Lett. 69, 1492 (1996).
17. R. Car and M. Parrinello, Phys. Rev. Lett. 56, 2471 (1985).
18. The theoretical framework is the density functional theory in the local density approximation. Valence electrons are treated explicitly, and the core-valence interaction is described with angular-momentum-dependent pseudopotentials constructed with the Martins-Troullier procedure [J. L. Martins and N. Trouiller, Phys. Rev. B 46, 1766 (1992)]. Nonlinear core corrections are included for lithium. The basis set consists of plane waves up to an energy cutoff of 30 Ry.
19. The electron density is assigned to a specific layer after the electron wave functions have been projected into the Li and Al atomic wave functions.
20. P. Bröms, J. Birgersson, N. Johansson, M. Lögdlund, and W. R. Salaneck, Synth. Met. 74, 179 (1995).
21. L. S. Hung, C. W. Tang, and M. G. Mason, Appl. Phys. Lett. 70, 152 (1997).
22. M. Probst and R. Haight, Appl. Phys. Lett. 70, 1420 (1997).