Gallium arsenide transistors integration

Elemental silicon is central to the vast industry of solid-state electronics. Appropriately doped with other elements, it forms a variety of semiconductors that constitute most transistors and integrated circuits. Other elements and compounds such as germanium or gallium arsenide have also found a niche as semicondnctors in electronics, but silicon occupies the prime position. How fortunate that it is the second most abundant element in the Earth s crust. Its compounds with the most abundant crustal element, oxygen, are equally central in many different aspects of chromatography. Silica, silica gel, glass, qnartz, fused silica, and silicones all have a remarkable variety of key roles to play in chromatography. Let us familiarize ourselves with some of their relevant properties. 

Transistors form the basis of ail modern electronic devices and systems, including the integrated circuits used in systems ranging from radio and television to computers. Transistors are solid-state electron devices made out of a category of materials called semiconductors. The mostly widely used semiconductor for transistors, by far, is silicon, although gallium arsenide, which is a compound semiconductor, is used for some very high-speed applications. 

---