Bright Prospects, Lingering Challenges: CsPbBr₃ Quantum Dots for Environmental Sensing

The quest for efficient and versatile environmental sensing technologies has led researchers to explore novel materials. The advent of CsPbBr₃ perovskite quantum dots (PQDs) has revolutionized the field of optoelectronics, offering a new paradigm for sensing applications due to their exceptional optical properties. This review paper examines the opportunities and challenges associated with using CsPbBr₃ PQDs for environmental sensing applications, focusing on their distinctive properties, synthesis methods, and practical implementations. We discuss the potential of CsPbBr₃ PQDs in various environmental sensing applications, including pollutant detection, temperature and pH monitoring, and gas and heavy-metal ion sensing. Additionally, we highlight the challenges and limitations posed by the stability and durability of these PQDs in different environments, particularly under conditions of humidity and temperature fluctuations. Lastly, we explore future perspectives and opportunities for CsPbBr₃ PQDs in environmental sensing, emphasizing the importance of addressing stability and toxicity concerns. This review provides a comprehensive overview of the current state of research on CsPbBr₃ PQDs for environmental sensing applications, offering insights into potential advancements and the challenges that remain.