I-Corps: Metal-assisted Delayed Fluorescent Emitters for Organic Displays

有机电致发光器件（Organic Light Emitting Diodes，OLED）被认为是下一代显示和照明器件的替代品，受到学术界和工业界的极大关注。该项目融合了合成有机化学，材料科学与工程，半导体物理和器件工程的接口，以进一步开发OLED。为了实现最大的器件效率（即，将所有注入的电子转换为光子），将需要发射材料来收集所有电子产生的激发。本项目的知识研究成果将有助于理解有机激子辐射衰减过程的基本机制，包括发射效率和发射光谱的形状。本项目中的新型金属辅助延迟荧光材料将为开发具有成本效益的显示器和固态照明做出重大贡献。现有的磷光发射体需要利用重金属离子，如铱，由于它们在地球上的天然丰度低，因此可能是昂贵的。另一方面，金属辅助的延迟荧光材料可以潜在地利用所有的电生激子并且依赖于更天然丰富的金属元素。这种技术将为有机显示器和固态照明提供更具成本效益的替代发光材料。

Organic Light Emitting Diodes (OLEDs) have been considered as alternate for the next generation of displays and illumination devices, which has received great attentions from academia and industries. The proposed project converges at the interface of synthetic organic chemistry, materials science and engineering, semiconductor physics and device engineering to further develop OLEDs. In order to achieve the maximum device efficiency (i.e. converting all of injected electron to photons), it will require emissive materials to harvest all of electron-generated exactions. The knowledge research gain from this project will help to understand the fundamental mechanisms governing the radiative decay process of organic excitons including the emission efficiency and the shape of the emission spectrum.The new classes of metal-assisted delay fluorescence materials in this project will significantly contribute to continuing efforts towards developing a cost-effective displays and solid state lighting. The existing phosphorescent emitters require the utilization of heavy metal ions like Iridium, which could be potentially expensive due to their low natural abundance on the earth. On the other hand, metal-assisted delay fluorescence materials could potentially utilize all of electro-generated excitons and rely on more naturally abundant metal elements. Such technology will provide more cost-effective alternative emissive materials for organic displays and solid state lighting.