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Effects of Various Types of Doping on the Electronic Structure of Organic Interfaces

  • Kazuhiko Seki (a1) (a2), Toshio Nishi (a3), Senku Tanaka (a3), Tadanobu Ikame (a3), Hisao Ishii (a4) and Kaname Kanai (a3)...

Abstract

In various organic electronic devices, interfaces formed by organic layers can play important roles. We have been studying various organic interfaces for clarifying their structure and electronic structure. In this talk, we will report our recent study of the effect of various types of doping for a variety of dopants – residual impurity, atmospheric gases, and metallic and organic intentional dopants. In particular, detailed and quantitative information about the effect of oxygen from the viewpoint of electronic structure was obtained for titanyl phthalocyanine (TiOPc), and the results corresponded well with the recent report of atmospheric effect on orga nic field effect transistor.

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[1] Ishii, H., Sugiyama, K., Ito, E., and Seki, K., “Energy Level Alignment and Interfacial Electronic Structures at Organic/metal and Organic/organic Interfaces”, Adv. Mat., 11, 605625
[2] “Conjugated Polymer & Molecular Interfaces: Science & Technology for Photonic & Optoelectronic Applications”, (Eds. Salaneck, W., Seki, K., Kahn, A., and Pireaux, J.-J., Marcel Dekker Inc., N. Y.) (2002).
[3] Vazquez, H., Flores, F., Oszwaldowski, R., Ortega, J., Perez, R. and Kahn, A., Appl. Surf. Sci. 234, 107 (2004)
[4] Morikawa, Y., Ishii, H., and Seki, K., Phys. Rev. B69, 41403 (2004).
[5] Hayashi, N., Synth. Metals, 121, 1717 (2001).
[6] Oji, H., Ito, E., Furuta, M., Kajikawa, K., Ishii, H., Ouchi, Y., and Seki, K., J. Electron Spectrosc. Rel. Phenom., 101-103, 517518 (1999) and unpublished results.
[7] Ishii, H., Hayashi, N., Ito, E., Washizu, Y., Sugi, K., Kimura, Y., Niwano, M., Ouchi, Y., and Seki, K., Phys. Stat. Sol. (a) 201, 1075 (2004).
[8] Hayashi, N., Ishii, H., Ouchi, Y., and Seki, K., J. Appl. Phys., 92, 3784 (2002).
[9] Pfeiffer, M., Leo, K., Zhou, X., Huang, J. S., Hofmann, M., Werner, A., and Blochwitz-Nimoth, J., Org. Electronics, 4, 89 (2003) and references therin.
[10] Kahn, A. and Gao, W., J. Phys., C15, S2757 (2003) and references therin.
[11] Tanaka, S., Kanai, K., Kawabe, E., Iwahashi, T., Nishi, T., Ouchi, Y., and Seki, K., Jpn. J. Appl. Phy.s., in press.
[12] Nishi, T., Kanai, K., Ouchi, Y., Willis, M. R., and Seki, K., Chem. Phys. Lett., submitted.
[13] Hosoi, Y., Sakurai, Y., Yamamoto, M., Ishii, H., Ouchi, Y., and Seki, K., Surf. Sci., 515, 157 (2002)
[14] Tada, H. Touda, H., Takada, M., and Matsushige, K.., J. Appl. Phys., 76, 873 (2000).
[15] Kanai, K. et al., unpublished.

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Effects of Various Types of Doping on the Electronic Structure of Organic Interfaces

  • Kazuhiko Seki (a1) (a2), Toshio Nishi (a3), Senku Tanaka (a3), Tadanobu Ikame (a3), Hisao Ishii (a4) and Kaname Kanai (a3)...

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