<p>Light-emitting electrochemical cells (LECs) are one of the simplest light-emitting devices. Numerous LECs have been demonstrated using various organic materials, including fluorescent polymers. Recently, advancements in device technologies have allowed the realization of LECs using inorganic materials, especially with low-dimensional materials that are typically not easy to apply in light-emitting devices. This review focuses on the current progress in the device structures, operating mechanisms, and advantages of LECs that enable the utilization of diverse inorganic materials. In particular, recent advances in low-dimensional-material LECs, such as those employing quantum dots and two-dimensional materials, are highlighted. Owing to their advantages, low-dimensional-material LECs, including chiral light-emitting devices, offer significant functionalities and device utilities, exhibiting promise for new optoelectronic applications with emergent materials.</p>
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