Perovskite Nanocrystals in Glass for High Efficiency and Ultra-High Resolution Dynamic Holographic Multicolor Display
Embedding CsPbX3 (X=Cl, Br, I) perovskite nanocrystals (PNCs) within inorganic glass matrices mitigates their intrinsic environmental instability, yet simultaneous attainment of high luminance and high photoluminescence quantum yield (PLQY) remains impeded by strong self-absorption. This study introduces fluoride ion doping to modify the three-dimensional glass network, thereby optimizing PNC crystallization behavior and enabling full-spectrum high luminance and high PLQY. The optimized PNCs-glass composites achieve a record PLQY of 36% for pure blue emission (<480 nm) while maintaining high luminance. The robust glass matrix provides excellent encapsulation, ensuring stability against ambient light, heat, and chemical solvents. Integrating these composites with a spatial light modulator (SLM) and computer-generated holograms (CGHs) yields a dynamic holographic multicolor display with pixel density up to 20,247 pixels per inch (PPI). A vertically stacked multilayer full-color architecture is further demonstrated, surpassing conventional planar color display technologies in resolution and light utilization efficiency. The CIE 1931 color gamut covers 112.7% of the NTSC standard. This work establishes a promising paradigm for energy-efficient, ultra-high-resolution displays.