Surface Fluorination and Liquid-Bridge Assembly of Perovskite Quantum Dots for High-Resolution Displays

• • Fluorine surface reconstruction via TBAF yields BHOA+F CsPbBr3 Pe-QDs with a PLQY of 94.6%, a threshold that directly enables high luminous efficacy in pixelated LEDs; industrial display manufacturers require PLQY >90% to meet BT.2020 color gamut and power efficiency targets. • • Accelerated ageing, UV irradiation, and thermal cycling tests demonstrate improved structural and environmental stability of BHOA+F Pe-QDs, addressing the operational lifetime bottleneck that has historically limited Pe-QDs to laboratory-scale demonstrations; stability under thermal cycling is critical for automotive and outdoor display applications. • • Capillary liquid-bridge confined assembly achieves in-plane long-range order, vertical confinement, and precise spatial patterning of CsPbBr3 Pe-QDs, overcoming the ligand detachment and surface roughness inherent to traditional lithographic patterning; this enables pixel densities required for near-eye displays and high-resolution monitors. • • The strategy is compositionally generalizable across red, green, and blue Pe-QDs, supporting wide color gamut displays; this universality reduces process complexity and capital expenditure for manufacturers seeking to replace legacy OLED and quantum-dot LED technologies.