Advanced metal halide perovskite emitters for next-generation display technologies

Metal halide perovskites (MHPs) are increasingly recognized as promising materials for future display technologies due to their exceptionally high color purity. In this talk, we will explore the unique benefits and approaches in utilizing MHPs for display technologies, focusing on innovative nanostructures and material strategy in precisely engineered colloidal perovskite nanocrystals (PNCs) for high luminous efficiency in perovskite light-emitting diodes (PeLEDs). This includes the addition of zero-dipole cations and bromide-incorporated molecules for effective mitigation of defect sites in PNCs. In terms of scalable manufacturing, we have developed a modified bar-coating technique that yields PeLEDs with emission efficiency comparable to those of PeLEDs with small emission area. Additionally, we'll discuss an advanced core/shell PNC synthesis method, leading to realization of simultaneously bright, efficient, and stable PeLEDs. Further, we developed a novel hybrid tandem PeLEDs with an ideal optical structure that emits light much efficiently with narrow bandwidth. These developments highlight the potential of MHPs as leading materials for self-emissive displays.