High-performance blue organic light-emitting diodes with 20% external electroluminescence quantum efficiency based on pyrimidine-containing thermally activated delayed fluorescence emitters

In Seob Park, Jiyoung Lee, Takuma Yasuda

    Research output: Contribution to journalArticlepeer-review

    77 Citations (Scopus)

    Abstract

    We report here high-performance pure blue thermally activated delayed fluorescence (TADF) molecules based on a central pyrimidine acceptor (A) core with peripheral diphenylacridan donor (D) units. A design motif of highly twisted D-A-D architectures having a small singlet-triplet energy splitting allows for the production of efficient pure blue TADF with high quantum efficiencies exceeding 90%. An OLED based on the blue pyrimidine-based TADF emitter exhibits a high maximum external quantum efficiency of 20.8% and a high power efficiency of 31.5 lm W-1.

    Original languageEnglish
    Pages (from-to)7911-7916
    Number of pages6
    JournalJournal of Materials Chemistry C
    Volume4
    Issue number34
    DOIs
    Publication statusPublished - 2016

    All Science Journal Classification (ASJC) codes

    • General Chemistry
    • Materials Chemistry

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