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<p>As a revolutionary display technology, organic light-emitting diodes (OLEDs) have achieved remarkable technological progress and commercial success in recent years. However, despite years of intensive research, high-efficiency deep-blue OLEDs with a long device lifetime remain elusive. Sensitized fluorescence, in which phosphorescence or thermally activated delayed fluorescence sensitizers are combined with narrowband fluorophores as terminal emitters, has emerged as a promising solution. This synergistic strategy holds great potential for thermodynamically and kinetically stabilizing deep-blue devices, alongside realizing unity exciton utilization efficiency and narrowband electroluminescence. Here we highlight recent advancements in the molecular design of sensitizers and narrowband emitters, as well as the optimization of their combination, for applications in deep-blue sensitized fluorescent devices. We also identify key challenges and outline pathways for the future commercialization of highly efficient and stable blue OLEDs that go beyond conventional fluorescence.</p>

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Stable deep-blue organic light-emitting diodes based on sensitized fluorescence

  • 期刊论文

  • 发表日期：

    2026年1月8日

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  • Dongdong Zhang,
  • Hengyi Dai,
  • Hai Zhang,
  • Lian Duan

摘要

As a revolutionary display technology, organic light-emitting diodes (OLEDs) have achieved remarkable technological progress and commercial success in recent years. However, despite years of intensive research, high-efficiency deep-blue OLEDs with a long device lifetime remain elusive. Sensitized fluorescence, in which phosphorescence or thermally activated delayed fluorescence sensitizers are combined with narrowband fluorophores as terminal emitters, has emerged as a promising solution. This synergistic strategy holds great potential for thermodynamically and kinetically stabilizing deep-blue devices, alongside realizing unity exciton utilization efficiency and narrowband electroluminescence. Here we highlight recent advancements in the molecular design of sensitizers and narrowband emitters, as well as the optimization of their combination, for applications in deep-blue sensitized fluorescent devices. We also identify key challenges and outline pathways for the future commercialization of highly efficient and stable blue OLEDs that go beyond conventional fluorescence.