Perovskite Quantum Dot Fibers: Advances, Challenges, and Prospects Toward Next‐Generation Flexible Optoelectronics

ABSTRACT The escalating requirements for conformal and wearable optoelectronic systems have stimulated groundbreaking advancements in functional material engineering and device topology innovation. Traditional rigid architectures, constrained by mechanical inflexibility and integration challenges, are being superseded by fiber‐based platforms that capitalize on intrinsic deformability, mass‐production compatibility, and seamless textile integration. Perovskite quantum dots (PQDs), distinguished by their superb quantum yield, spectrally programmable emission, and colloidal processability, have emerged as transformative components for next‐generation optoelectronic fibers. This review provides a comprehensive overview of recent advances in perovskite quantum dot fiber (PQDF) technologies, encompassing synthesis strategies, approaches to performance optimization, and emerging applications. It systematically highlights key technical challenges associated with environmental stability, scalability, and interfacial compatibility, while outlining future research directions centered on sensing, anti‐countereitng, photoelectric conversion, and optical communication applications. By integrating materials innovation with device engineering perspectives, this review serves as a critical bridge between fundamental research and practical implementation in the development of smart textiles and next‐generation optoelectronic systems.