Microwave-Assisted Synthesis of CsPbBr₃ Perovskite Nanocrystals for Optoelectronic Applications

Perovskite nanocrystals (PeNCs) have emerged as promising materials for next-generation optoelectronic devices due to their exceptional optical properties and chemical tunability. Among them, all-inorganic PeNCs offer bright emission and enhanced stability, but their most common fabrication method, hot injection, remains complex, energy-intensive, and challenging to scale. This Ph.D. work investigates microwave-assisted synthesis as a sustainable and scalable alternative for producing high-quality PeNCs. By optimizing reaction conditions, we show that microwave heating enables rapid formation of highly crystalline nanocrystals with tunable optical properties and high photoluminescence quantum yields after purification. These materials were successfully integrated into light-emitting diodes (LEDs), delivering efficiency, narrow emission, and brightness. A life cycle assessment comparing microwave-assisted and conventional methods reveals substantial reductions in energy consumption, reinforcing the greener profile of this approach. Overall, this thesis demonstrates that combining innovative synthesis routes with sustainable practices supports the transition from laboratory-scale research to industrial production of perovskite-based technologies.