IQE PLC is a British semiconductor company founded 1988 in Cardiff, Wales, which manufactures advanced epitaxial wafers for a wide range of technology applications for wireless, optoelectronic, electronic and solar devices. IQE specialises in advanced silicon and compound semiconductor materials based on gallium arsenide (GaAs), indium phosphide (InP), gallium nitride (GaN) and silicon. The company is the largest independent outsource producer of epiwafers manufactured by metalorganic vapour phase epitaxy (MOCVD), molecular beam epitaxy (MBE) and chemical vapor deposition (CVD). The company is headquartered with two manufacturing facilities in Cardiff, with factories in Newport and Milton Keynes in the United Kingdom; Bethlehem, Pennsylvania, Taunton, Massachusetts, and Greensboro, North Carolina in the United States; and Taiwan and Singapore in Asia. History IQE was founded by Drew Nelson and Michael Scott in 1988 as Epitaxial Products International (EPI). Initially, the company specialised in producing epitaxial wafers for optoelectronic devices used primarily in fiber optic telecommunications. Metal Organic Chemical Vapor Deposition (MOCVD) technology was used to produce semiconductor lasers, light-emitting diodes (LEDs) and photodetectors designed to operate at wavelengths of 1300 nm and 1550 nm utilised for long distance fiber optic communications. In 1999, Epitaxial Products International merged with Pennsylvania-based Quantum Epitaxial Designs (QED) to form IQE. QED was founded by Tom Hierl. Also in 1999, the newly merged entity underwent an initial public offering (IPO) on the European EASDAQ (NASDAQ Europe) stock exchange, followed a year later by a listing on the London Stock Exchange. The merger with QED brought to the group a range of new manufacturing tools based on molecular beam epitaxy (MBE) technology and a range of products for the wireless telecommunications. Following the merger, IQE became the first independent outsource manufacturer of both optoelectronic and radio frequency (RF) epitaxial wafers produced using both MOCVD and MBE technologies. The Bethlehem facility specialised in a number of wireless products including pseudomorphic high electron mobility transistors (pHEMTs) and metal semiconductor field-effect transistors (MESFETs). In 2000, the company formed a new, wholly owned subsidiary company specialising in silicon based epitaxy. IQE Silicon was established in a new facility adjacent to the group's headquarters and European manufacturing base in Cardiff, Wales, UK. The new subsidiary used chemical vapor deposition (CVD) tools to produce silicon and germanium epitaxial wafers for enhanced silicon processing performance, microelectromechanical systems (MEMS) and nanotechnology applications. Also in 2000, the group acquired Wafer Technology based in Milton Keynes, UK. The acquisition