Copper nitride is a compound that emerges from the union of copper and nitrogen. It has a golden-yellow appearance and exhibits a cubic crystal structure. This material possesses notable electrical and optical properties, including high conductivity and a wide band gap, making it suitable for applications in electronics, semiconductors, and optoelectronics. Copper nitride also displays remarkable optical characteristics such as high refractive index and transmittance, which are beneficial for optical applications. Its diverse properties enable its use in solar cells, photocatalysts, sensors, coatings, and other advanced technologies.