Recent Progress in CsPbX₃ (X = Cl, Br, and I) Perovskite Quantum Dot Glasses: Synthesis, Matrix Optimization, and Photonic Application Potentials

Abstract Perovskite quantum dots (PQDs) have emerged as prominent candidates for a variety of optoelectronic applications, including solar cells, white light‐emitting diodes (WLED), and liquid crystal displays (LCD), owing to their remarkable optical and electronic properties. These properties encompass high absorption coefficients, elevated quantum yields, tunable bandgaps, and narrow emission peaks. Nonetheless, PQDs are inherently unstable due to their low formation energy and ionic crystal nature, making them susceptible to degradation upon exposure to light, heat, and moisture. To address these challenges, encapsulating PQDs within an inorganic glass matrix has been proven effective. The rigid structure of the glass matrix significantly enhances the stability of PQDs while preserving their exceptional optical characteristics. This review provides an overview of recent advancements in PQD glasses and aims to offer critical insights to propel future research in this domain. The commonly employed glass matrix and preparation techniques for PQD glasses are reviewed, highlighting their fundamental properties such as structural integrity, optical performance, andstability, and discussing the approaches to improve the optical properties of PQD glasses, which include glass component regulation and PQD structure regulation. Additionally, the potential applications of PQD glasses in diverse areas, including WLED, LCD, and temperature sensing are explored.