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Materials for Organic Light Emitting Diode (OLED)

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Electronic Processes in Organic Electronics

Part of the book series: Springer Series in Materials Science ((SSMATERIALS,volume 209))

Abstract

In this chapter, materials that constitute phosphorescent OLED (PHOLED) are discussed. Especially, it is described that dopant and host materials used in an emitting layer such as the phosphorescent triscyclometalated iridium (III) complexes and host materials to confine excitation energy of the triplet excitons. Photophysical and photochemical properties of homoleptic and heteroleptic iridium complexes are elucidated. Coordinations of three bidentate ligands to iridium atom provide octahedral structure taking facial (fac) and meridional (mer) configurations. Their characters in the excited state and mechanism of photochemical isomerization are discussed extensively. In addition, development of wet-processable host materials for PHOLED device is described.

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Acknowledgments

This work was supported by Grants-in-Aids for Scientific Research (No. 20550056 and 26288111) and the G-COE Program (Advanced School for Organic Electronics) from the Ministry of Education, Culture, Sports, Science and Technology (MEXT), and COE Start-up Program from Chiba University.

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  1. Department of Applied Chemistry and Biotechnology, Graduate School of Engineering, Chiba University, 1-33, Inage-ku, Chiba, 263-8522, Japan

    Takashi Karatsu

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  1. Takashi Karatsu
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Correspondence to Takashi Karatsu .

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Editors and Affiliations

  1. Chiba University, Chiba, Japan

    Hisao Ishii

  2. Chiba University, Chiba, Japan

    Kazuhiro Kudo

  3. Chiba University, Chiba, Japan

    Takashi Nakayama

  4. Chiba University, Chiba, Japan

    Nobuo Ueno

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Karatsu, T. (2015). Materials for Organic Light Emitting Diode (OLED). In: Ishii, H., Kudo, K., Nakayama, T., Ueno, N. (eds) Electronic Processes in Organic Electronics. Springer Series in Materials Science, vol 209. Springer, Tokyo. https://doi.org/10.1007/978-4-431-55206-2_11

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