Organic compounds and organic light-emitting devices

An organic compound with phenanthrene bonded to the benzene ring at position 2 addresses the lifetime and sublimability issues in existing compounds, enabling lower voltage and more efficient organic light-emitting devices with enhanced durability.

JP7888347B2Active Publication Date: 2026-07-13CANON KK
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Patent Information

Application Number
JP2022083821
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Filing Date
2022-05-23
Publication Date
2026-07-13
Estimated Expiration
2042-05-23

AI Technical Summary

Technical Problem

Existing organic compounds used in organic light-emitting devices face issues with device lifetime due to high ΔST and low sublimability, leading to increased voltage requirements and reduced durability.

Method used

The development of an organic compound represented by general formula (1), featuring a phenanthrene bonded to the benzene ring at position 2, which reduces ΔST and enhances sublimability, thereby improving charge transport and stability, allowing for lower voltage operation and extended device lifespan.

Benefits of technology

The use of this compound as a host material in the light-emitting layer results in an organic light-emitting device that operates at lower voltages with improved luminous efficiency and extended device lifespan.

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Abstract

To provide an organic light-emitting device having a sufficiently long service life.SOLUTION: An organic compound is represented by general formula (1). In the general formula (1), Ar is a carbazolyl group, an aryl group, or a heterocyclic group having a chalcogen element, where, if Ar is a phenanthrenyl group, the phenanthrenyl group has a substituent. R1 to R21 are selected from a hydrogen atom, a deuterium atom, a halogen atom, an alkyl group, an alkoxy group, a silyl group, an amino group, an aryl group, and a heterocyclic group.SELECTED DRAWING: None
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Citation Information

Patent Citations

  • JP1975000481A

  • Kokakensasochi

    JP1976002499A

  • Light emission element

    JP2002050481A

  • Phenanthrene compound and organic luminescent element using the same

    JP2012097056A

  • Absorbent article

    JP2017099593A