Amorphous Engineering of Transparent High‐Crystallinity Luminescent Nano‐Glass‐Ceramics for Advanced Photonic Applications

Abstract

ABSTRACT Transparent glass‐ceramics are promising materials for advanced applications, but their development is fundamentally constrained by low crystallinity (<70%), leading to significant “performance deterioration”. In order to overcome this bottleneck, this study proposes a universal amorphous engineering approach, which synergistically exploits amorphous phase separation and glass‐network confinement. This method promotes heterogeneous nucleation at phase boundaries and spatially restricts crystal growth, achieving ultra‐high crystallinity (> 90%) while maintaining high optical transparency (> 90%). Unlike conventional approaches that rely on specific compositions or crystallization pathways, this broadly adaptable strategy has been successfully extended to fluoride, oxide, perovskite, and sulfide‐based glass‐ceramics, demonstrating its versatility. Upon rare‐earth doping, the composites exhibit superior performance in transparent displays, laser‐driven lighting, and high‐resolution X‐ray imaging. The results provide an adaptable strategy for next‐generation photonic materials in advanced optical technologies.