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Novel design perovskite electrochemical cell for light-emission and light-detection —Undefined Trio Perovskite materials have gained significant attention in the field of optoelectronics due to their exceptional properties, including high efficiency, color purity, and broad color gamut. However, the industrial integration of perovskite light-emitting devices has been hindered by the complexity of their multilayer structure and poor stability under operating conditions. In a recent breakthrough, researchers at Compuscript Ltd have developed a novel type of perovskite optoelectronic device called a perovskite light-emitting electrochemical cell, which offers a simpler architecture and enhanced stability. Traditional perovskite light-emitting diodes consist of multiple active layers responsible for charge separation and transport. In contrast, perovskite light-emitting electrochemical cells have a monolayered structure, making them easier to fabricate and integrate into practi