Tunable Full-Color Electroluminescence from All-Organic Optical Upconversion Devices by Near-Infrared Sensing

Hiroki Tachibana, Naoya Aizawa, Yu Hidaka, Takuma Yasuda

    Research output: Contribution to journalArticlepeer-review

    59 Citations (Scopus)

    Abstract

    Full-color all-organic optical upconversion devices that can directly convert incident near-infrared (NIR) light into tunable visible light were developed by integrating an organic light-emitting diode (OLED) on an NIR-sensitizing organic photodetector. Thermally activated delayed fluorescence (TADF) emitters were utilized for the first time in the upconversion devices for achieving high electroluminescence (EL) efficiency in the OLED unit and high overall upconversion efficiency. The emission color of upconversion EL can be varied across the entire visible region ranging from blue to red and white by judicious selection of the incorporating TADF emitters. These all-organic optical upconversion devices have a great potential for low-cost, large-area, pixelless NIR imaging applications.

    Original languageEnglish
    Pages (from-to)223-227
    Number of pages5
    JournalACS Photonics
    Volume4
    Issue number2
    DOIs
    Publication statusPublished - Feb 15 2017

    All Science Journal Classification (ASJC) codes

    • Electronic, Optical and Magnetic Materials
    • Biotechnology
    • Atomic and Molecular Physics, and Optics
    • Electrical and Electronic Engineering

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