Lead-free perovskite LEDs powered by cyanuric acid

Metal halide perovskites have been considered as one of the emerging light emitters due to their unique properties, e.g., adjustable band gap, high mobility, high photoluminescence quantum yield, low cost, and solution processability.1,2 However, lead (Pb)-based perovskites can degrade into harmful elemental Pb and Pb2+ compounds, which can cause significant damage to the environment and human body.