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Ancillary ligand increases the efficiency of heteroleptic Ir-based triplet emitters in OLED devices

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  • Seung-yeol Baek

    (Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST)
    Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS))

  • Seung-Yeon Kwak

    (Samsung Advanced Institute of Technology (SAIT), Samsung Electronics Co., Ltd.)

  • Seoung-Tae Kim

    (Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST)
    Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS))

  • Kyu Young Hwang

    (Samsung Advanced Institute of Technology (SAIT), Samsung Electronics Co., Ltd.)

  • Hyun Koo

    (Samsung Advanced Institute of Technology (SAIT), Samsung Electronics Co., Ltd.)

  • Won-Joon Son

    (Data and Information Technology (DIT) Center, Samsung Electronics)

  • Byoungki Choi

    (Samsung Advanced Institute of Technology (SAIT), Samsung Electronics Co., Ltd.)

  • Sunghan Kim

    (Samsung Advanced Institute of Technology (SAIT), Samsung Electronics Co., Ltd.)

  • Hyeonho Choi

    (Samsung Advanced Institute of Technology (SAIT), Samsung Electronics Co., Ltd.)

  • Mu-Hyun Baik

    (Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST)
    Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS))

Abstract

The excellent contrast ratio, visibility, and advantages in producing thin and light displays let organic light emitting diodes change the paradigm of the display industry. To improve future display technologies, higher electroluminescence efficiency is needed. Herein, the detailed study of the non-radiative decay mechanism employing density functional theory calculations is carried out and a simple, general strategy for the design of the ancillary ligand is formulated. It is shown that steric bulk properly directed towards the phenylisoquinoline ligands can significantly reduce the non-radiative decay rate.

Suggested Citation

  • Seung-yeol Baek & Seung-Yeon Kwak & Seoung-Tae Kim & Kyu Young Hwang & Hyun Koo & Won-Joon Son & Byoungki Choi & Sunghan Kim & Hyeonho Choi & Mu-Hyun Baik, 2020. "Ancillary ligand increases the efficiency of heteroleptic Ir-based triplet emitters in OLED devices," Nature Communications, Nature, vol. 11(1), pages 1-7, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-16091-1
    DOI: 10.1038/s41467-020-16091-1
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    Cited by:

    1. Jaewook Kim & Joonghyuk Kim & Yongjun Kim & Youngmok Son & Youngsik Shin & Hye Jin Bae & Ji Whan Kim & Sungho Nam & Yongsik Jung & Hyeonsu Kim & Sungwoo Kang & Yoonsoo Jung & Kyunghoon Lee & Hyeonho C, 2023. "Critical role of electrons in the short lifetime of blue OLEDs," Nature Communications, Nature, vol. 14(1), pages 1-9, December.

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