II-VI is a chemical compound consisting of two elements: Group II elements, such as zinc or cadmium, and Group VI elements, like sulfur or selenium. These compounds are often semiconductors, meaning they can conduct electricity under certain conditions, making them useful in various electronic applications. In addition to their electronic properties, II-VI compounds are used in optoelectronics, which includes devices like LEDs and lasers. They are also important in the production of solar cells and other technologies that harness light and energy, contributing to advancements in renewable energy and communication systems.