New progress in improving the efficiency of solar cells with high-purity copper sulfide
High-purity copper Sulfide CuS, also known as high-purity copper sulfide, is an inorganic compound. Usually black or black brown crystals or powder. Insoluble in water and dilute acids but can decompose in concentrated sulfuric acid. Dissolve in an ammonia solution of potassium cyanide and sodium sulfide, forming a dark green solution.