Microwave-Assisted Thick MAPbBr₃ for High-Energy Radiation Detection

High-energy radiation detection is crucial in fields such as medicine, industry, security, and defense. This work demonstrates the potential of microwave-assisted synthesis for scalable and efficient perovskite-based radiation detectors requiring thick films and low thermal budgets. We discuss the synthesis and characterization of thick methylammonium lead bromide (MAPbBr 3 ) films using low-temperature, time-effective, and inexpensive microwave-assisted methods. The performance of the resulting MAPbBr 3 thick films as high-energy radiation detectors, in particular X-ray radiation, is discussed. Specifically, this work systematically evaluates the impact of the microwave power and solvent composition on the resulting crystalline structure, optoelectronic properties, and morphology of the MAPbBr 3 films. Optimized films demonstrated a sensitivity of 4.5 μCGy – 1 cm – 2 (photons with an energy of ∼50 keV) under an electric field of 100 Vmm – 1 .