Green Synthesis of Luminescent Perovskite Quantum Dots

The green synthesis of perovskite quantum dots (PQDs) has garnered significant attention as a sustainable strategy to mitigate the environmental and safety concerns associated with conventional synthesis methods. This review systematically examines green and ecofriendly synthesis approaches for PQDs, with a particular focus on nontoxic green solvents. Based on their chemical properties and sources, these solvents can be categorized into three classes: polar solvents, bio‐based solvents, and ionic liquids, each offering distinct advantages in terms of production yield, material stability, and optical performance. Notably, solvent polarity plays a crucial role in controlling the size distribution of PQDs, optimizing surface chemistry, and enhancing luminescence properties. Additionally, current challenges and future research directions in green synthesis are discussed, emphasizing the need for innovative solutions to improve process efficiency and scalability.