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Physics and Design Principles of OLED Devices

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Handbook of Organic Light-Emitting Diodes

Abstract

The previous chapters have set the foundation for understanding the underlying physics of organic semiconductors and the basic operation and characteristics of OLEDs. This chapter brings all of these concepts together and covers the main electronic processes occurring in complete devices and the important considerations for designing efficient devices. First, the role of different layers in bringing charges together in a balanced manner is discussed. Next, the conditions needed to achieve efficient charge recombination to form excitons and confine the excitons to the light-emitting materials are covered. Materials and device considerations for efficient light emission based on fluorescence, phosphorescence, and thermally-activated delayed fluorescence, the three primarily employed processes, are discussed along with a few other processes that are being explored for efficient emission. Finally, we turn our attention to considerations such as light outcoupling and alternative device structures.

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Authors and Affiliations

  1. Fukuoka i3-Center for Organic Photonics and Electronics Research (i3-OPERA), Fukuoka, Japan

    Gábor Méhes

  2. Laboratory of Organic Electronics, Department of Science and Technology, Linköping University, Norrköping, Sweden

    Gábor Méhes

  3. Center for Organic Photonics and Electronics Research (OPERA), Kyushu University, Fukuoka, Japan

    Atula S. D. Sandanayaka, Jean-Charles Ribierre & Kenichi Goushi

  4. Japan Science and Technology Agency (JST), ERATO, Adachi Molecular Exciton Engineering Project, Fukuoka, Japan

    Jean-Charles Ribierre & Kenichi Goushi

  5. Department of Physical Sciences and Technologies, Faculty of Applied Sciences, Sabaragamuwa University of Sri Lanka, Belihuloya, Sri Lanka

    Atula S. D. Sandanayaka

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  1. Gábor Méhes
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  2. Atula S. D. Sandanayaka
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  3. Jean-Charles Ribierre
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  4. Kenichi Goushi
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Correspondence to Gábor Méhes .

Editor information

Editors and Affiliations

  1. Department of Applied Chemistry and Biochemistry, Kyushu University, Fukuoka, Japan

    Chihaya Adachi

  2. Art, Science and Technology Center for Cooperative Research, Kyushu University KASTEC, Fukuoka, Japan

    Reiji Hattori

  3. Institute for Chemical Research Division of Environmental Chemistry, Kyoto University, Kyoto, Japan

    Hironori Kaji

  4. Konica Minolta Pioneer OLED, Inc., Konica Minolta, Inc., Tokyo, Japan

    Takatoshi Tsujimura

Section Editor information

  1. Center for Organic Photonics and Electronics Research, Kyushu University, Fukuoka, Fukuoka-ken, Japan

    Chihaya Adachi

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Méhes, G., Sandanayaka, A.S.D., Ribierre, JC., Goushi, K. (2020). Physics and Design Principles of OLED Devices. In: Adachi, C., Hattori, R., Kaji, H., Tsujimura, T. (eds) Handbook of Organic Light-Emitting Diodes. Springer, Tokyo. https://doi.org/10.1007/978-4-431-55761-6_49-1

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