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Showing 1–7 of 7 results
Advanced filters: Author: Himchan Cho Clear advanced filters

  • The high-speed, large-area printing of aligned semiconducting nanowires is vital for practical device applications. Here, the authors use a high-speed printing technique to print semiconducting nanowire arrays onto device substrates with precise nanowire control, and high field-effect mobilities are observed.

    • Sung-Yong Min
    • Tae-Sik Kim
    • Tae-Woo Lee
    Research
    Nature Communications
    Volume: 4, P: 1-9

  • We synthesized stretchable electroluminescent polymers capable of reaching a near-unity theoretical quantum yield through thermally activated delayed fluorescence. Their polymers show 125% stretchability with 10% external quantum efficiency and demonstrate a fully stretchable organic light-emitting diode.

    • Wei Liu
    • Cheng Zhang
    • Sihong Wang
    Research
    Nature Materials
    Volume: 22, P: 737-745

  • An unusual new material, NiTTFtt, is reported that is structurally amorphous, precluding a classical band structure, but detailed characterization reveals high conductivity and a metallic character.

    • Jiaze Xie
    • Simon Ewing
    • John S. Anderson
    Research
    Nature
    Volume: 611, P: 479-484

  • We report a new anode material that has multifunction of both an anode and a hole injection layer (HIL) as a single layer. Our anode has easy work function tunability up to 5.8 eV and thus makes ohmic contact without any HIL. We applied our anodes to simplified organic light-emitting diodes, resulting in high efficiency (62% ph el−1 for single and 88% ph el−1 for tandem). Our anode showed a similar tendency in simplified perovskite light-emitting diodes. We also demonstrated large-area flexible lightings using our anodes. Our results provide a significant step toward the next generation of high-performance simplified light-emitting diodes.

    • Su-Hun Jeong
    • Seong-Hoon Woo
    • Tae-Woo Lee
    ResearchOpen Access
    NPG Asia Materials
    Volume: 9, P: e411

  • We realized highly flexible tandem OLEDs using a graphene anode with very high electroluminescent efficiency ~205.9 cd A−1, 45.2% (~396.4 cd A−1, 87.3% with a hemispherical lens) and very low efficiency roll-off at high luminance ~6.6% at 10 000 cd m−2 (~3.8% with a hemispherical lens) by stacking two organic electroluminescence units using a easily controllable and low-temperature processable charge generation layer on thin flexible plastic substrates. The flexible OLEDs showed great flexibility against bending stress up to bending strain of 6.7%.

    • Tae-Hee Han
    • Min-Ho Park
    • Tae-Woo Lee
    ResearchOpen Access
    NPG Asia Materials
    Volume: 8, P: e303