Gallium arsenide (GaAs) is a compound semiconductor made from gallium and arsenic. It is widely used in electronic devices, particularly in high-frequency applications like mobile phones and satellite communications due to its superior electron mobility compared to silicon. This property allows for faster signal processing and improved performance in various electronic components. In addition to electronics, gallium arsenide is also utilized in optoelectronic devices such as light-emitting diodes (LEDs) and solar cells. Its ability to efficiently convert electricity into light makes it a key material in modern technology, contributing to advancements in energy efficiency and communication systems.