Copper(I) selenide
Copper(I) selenide (Cu2Se) is a chemical compound composed of copper and selenium. It is a binary inorganic compound belonging to the family of metal chalcogenides. At room temperature, it exists as a black solid.
Cu2Se exhibits interesting electrical and thermal properties, including thermoelectric behavior. Its crystal structure can vary depending on temperature, leading to different phases and associated property changes. It can exist in both low-temperature and high-temperature phases, with the high-temperature phase exhibiting superionic conductivity.
Copper(I) selenide has been investigated for various applications, including thermoelectric devices, solar cells, and as a component in electronic materials. Its high electrical conductivity and relatively low thermal conductivity make it a promising material for converting heat energy into electrical energy and vice versa. Research continues into optimizing its properties and exploring new applications. The compound is typically synthesized using various methods, including solid-state reactions and solution-based approaches.