High-Throughput Compressed-Flux Growth of Perovskite Quantum Dot Films via Modular Precursor Feeding.

Translating metal halide perovskites from lab curiosity to commercial deployment requires high-throughput fabrication of stable, integration-ready material forms. This work reports a modular precursor feeding-integrated compressed-flux growth (MF-CFG) strategy for high-throughput fabrication and screening of perovskite quantum-dot-polymer composites. MF-CFG offers two key advantages: (1) it decouples precursor mixing from nucleation/growth within a confined hot-pressing flux, yielding nearly monodisperse quantum dots (∼5.5 nm, size deviation <10%) uniformly dispersed in a polymer matrix; and (2) by leveraging a library of standardized precursor modules and a combinatorial feeding strategy, it enables high-throughput composition-property mapping across diverse loading concentrations, A/B/X stoichiometries, halide and B-site alloying, and cross-family systems. The resulting MF-CFG perovskite quantum dot-doped polymer films exhibit enhanced photoluminescence, transparency, and X-ray response, alongside improved environmental resilience. As a proof of concept, MF-CFG CsPbBr3/PE films employed as color converters in white light-emitting diodes and as scintillator screens deliver wide-color-gamut emission (126% NTSC) and high-fidelity X-ray imaging (18 lp mm-1 spatial resolution at MTF = 0.2), resolving features down to ∼40 μm. MF-CFG therefore provides a scalable and generalizable platform that unites high-throughput material mapping with device-ready manufacture, accelerating translation of perovskite composites toward real-world applications.