近日，首都师范大学的廖清&付红兵及其研究团队取得一项新进展。经过不懈努力，他们研制出用于激光显示的高亮度、高色纯度有机偏振离子发光二极管。相关研究成果已于2024年8月15日在国际知名学术期刊《光：科学与应用》上发表。

该研究团队研发了一种基于有机单晶的新型OLED。通过将有机激子态与光学微腔强耦合，研究人员从偏振激元OLED（OPLED）中获得了具有高亮度、窄带发射、高色纯度、高偏振度以及优异的光泵浦偏振激元激光特性的偏振激元电致发光（EL）发射。

此外，研究人员通过理论分析评估了电泵浦偏振激元激光的潜力，并提供了可能的解决方案。这项工作通过材料与器件的结合，为电驱动有机单晶基偏振激元发光器件乃至激光器的研发开辟了新的道路。

据悉，在各种光电领域，实现具有窄带发射和高色纯度的高亮度有机发光器件（OLED）非常重要。激光显示技术因其极致的视觉体验而在下一代显示技术中展现出显著优势，但这仍然是一个巨大的挑战。

附：英文原文

Title: Organic polaritonic light-emitting diodes with high luminance and color purity toward laser displays

Author: De, Jianbo, Zhao, Ruiyang, Yin, Fan, Gu, Chunling, Long, Teng, Huang, Han, Cao, Xue, An, Cunbin, Liao, Bo, Fu, Hongbing, Liao, Qing

Issue&Volume: 2024-08-15

Abstract: Achieving high-luminescence organic light-emitting devices (OLEDs) with narrowband emission and high color purity is important in various optoelectronic fields. Laser displays exhibit outstanding advantages in next-generation display technologies owing to their ultimate visual experience, but this remains a great challenge. Here, we develop a novel OLED based organic single crystals. By strongly coupling the organic exciton state to an optical microcavity, we obtain polariton electroluminescent (EL) emission from the polariton OLEDs (OPLEDs) with high luminance, narrow-band emission, high color purity, high polarization as well as excellent optically pumped polariton laser. Further, we evaluate the potential for electrically pumped polariton laser through theoretical analysis and provide possible solutions. This work provides a powerful strategy with a material–device combination that paves the way for electrically driven organic single-crystal-based polariton luminescent devices and possibly lasers.

DOI: 10.1038/s41377-024-01531-0

Source: https://www.nature.com/articles/s41377-024-01531-0