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IQE PLC is a British
semiconductor A semiconductor is a material which has an electrical conductivity value falling between that of a conductor, such as copper, and an insulator, such as glass. Its resistivity falls as its temperature rises; metals behave in the opposite way. ...
company founded 1988 in Cardiff, Wales, which manufactures advanced
epitaxial Epitaxy refers to a type of crystal growth or material deposition in which new crystalline layers are formed with one or more well-defined orientations with respect to the crystalline seed layer. The deposited crystalline film is called an epit ...
wafers for a wide range of technology applications for
wireless Wireless communication (or just wireless, when the context allows) is the transfer of information between two or more points without the use of an electrical conductor, optical fiber or other continuous guided medium for the transfer. The most ...
,
optoelectronic Optoelectronics (or optronics) is the study and application of electronic devices and systems that find, detect and control light, usually considered a sub-field of photonics. In this context, ''light'' often includes invisible forms of radiat ...
,
electronic Electronic may refer to: *Electronics, the science of how to control electric energy in semiconductor * ''Electronics'' (magazine), a defunct American trade journal *Electronic storage, the storage of data using an electronic device *Electronic co ...
and solar devices. IQE specialises in advanced
silicon Silicon is a chemical element with the symbol Si and atomic number 14. It is a hard, brittle crystalline solid with a blue-grey metallic luster, and is a tetravalent metalloid and semiconductor. It is a member of group 14 in the periodic ta ...
and
compound semiconductor Semiconductor materials are nominally small band gap insulators. The defining property of a semiconductor material is that it can be compromised by doping it with impurities that alter its electronic properties in a controllable way. Because of ...
materials based on gallium arsenide (GaAs), indium phosphide (InP),
gallium nitride Gallium nitride () is a binary III/ V direct bandgap semiconductor commonly used in blue light-emitting diodes since the 1990s. The compound is a very hard material that has a Wurtzite crystal structure. Its wide band gap of 3.4 eV affords ...
(GaN) and silicon. The company is the largest independent outsource producer of epiwafers manufactured by
metalorganic vapour phase epitaxy Metalorganic vapour-phase epitaxy (MOVPE), also known as organometallic vapour-phase epitaxy (OMVPE) or metalorganic chemical vapour deposition (MOCVD), is a chemical vapour deposition method used to produce single- or polycrystalline thin films. ...
(MOCVD),
molecular beam epitaxy Molecular-beam epitaxy (MBE) is an epitaxy method for thin-film deposition of single crystals. MBE is widely used in the manufacture of semiconductor devices, including transistors, and it is considered one of the fundamental tools for the devel ...
(MBE) and chemical vapor deposition (CVD). The company is headquartered in Cardiff with an Innovation Centre and factories in
Newport, Wales Newport ( cy, Casnewydd; ) is a city and county borough in Wales, situated on the River Usk close to its confluence with the Severn Estuary, northeast of Cardiff. With a population of 145,700 at the 2011 census, Newport is the third-largest a ...
, Cardiff, Wales and Milton Keynes in the United Kingdom;
Bethlehem, Pennsylvania Bethlehem is a city in Northampton and Lehigh Counties in the Lehigh Valley region of eastern Pennsylvania, United States. As of the 2020 census, Bethlehem had a total population of 75,781. Of this, 55,639 were in Northampton County and 19, ...
,
Taunton, Massachusetts Taunton is a city in Bristol County, Massachusetts, United States. It is the seat of Bristol County. Taunton is situated on the Taunton River which winds its way through the city on its way to Mount Hope Bay, to the south. At the 2020 cen ...
, and
Greensboro, North Carolina Greensboro (; formerly Greensborough) is a city in and the county seat of Guilford County, North Carolina, United States. It is the List of municipalities in North Carolina, third-most populous city in North Carolina after Charlotte, North Car ...
in the United States; and
Taiwan Taiwan, officially the Republic of China (ROC), is a country in East Asia, at the junction of the East and South China Seas in the northwestern Pacific Ocean, with the People's Republic of China (PRC) to the northwest, Japan to the nort ...
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 Epitaxy refers to a type of crystal growth or material deposition in which new crystalline layers are formed with one or more well-defined orientations with respect to the crystalline seed layer. The deposited crystalline film is called an epit ...
wafers for optoelectronic devices used primarily in fiber optic telecommunications. Metal Organic Chemical Vapor Deposition (MOCVD) technology was used to produce
semiconductor lasers The laser diode chip removed and placed on the eye of a needle for scale A laser diode (LD, also injection laser diode or ILD, or diode laser) is a semiconductor device similar to a light-emitting diode in which a diode pumped directly with e ...
,
light-emitting diode A light-emitting diode (LED) is a semiconductor device that emits light when current flows through it. Electrons in the semiconductor recombine with electron holes, releasing energy in the form of photons. The color of the light (co ...
s (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 An initial public offering (IPO) or stock launch is a public offering in which shares of a company are sold to institutional investors and usually also to retail (individual) investors. An IPO is typically underwritten by one or more investme ...
(IPO) on the European EASDAQ (NASDAQ Europe) stock exchange, followed a year later by a listing on the
London Stock Exchange London Stock Exchange (LSE) is a stock exchange in the City of London, England, United Kingdom. , the total market value of all companies trading on LSE was £3.9 trillion. Its current premises are situated in Paternoster Square close to St P ...
. The merger with QED brought to the group a range of new manufacturing tools based on
molecular beam epitaxy Molecular-beam epitaxy (MBE) is an epitaxy method for thin-film deposition of single crystals. MBE is widely used in the manufacture of semiconductor devices, including transistors, and it is considered one of the fundamental tools for the devel ...
(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 Cardiff (; cy, Caerdydd ) is the capital and largest city of Wales. It forms a principal area, officially known as the City and County of Cardiff ( cy, Dinas a Sir Caerdydd, links=no), and the city is the eleventh-largest in the United Kingd ...
, Wales, UK. The new subsidiary used chemical vapor deposition (CVD) tools to produce
silicon Silicon is a chemical element with the symbol Si and atomic number 14. It is a hard, brittle crystalline solid with a blue-grey metallic luster, and is a tetravalent metalloid and semiconductor. It is a member of group 14 in the periodic ta ...
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, Milton Keynes, UK. The acquisition provided the group with in-house production of gallium arsenide (GaAs) and indium phosphide (InP) substrates as well as adding capabilities for gallium antimonide (GaSb) and indium antimonide (InSb) for infrared applications. In 2006, the Group acquired the Electronic Materials Division from Emcore, providing IQE with its second US operation based in Somerset, NJ. This acquisition added further MOCVD capacity and complementary radio frequency (RF) products including heterojunction bipolar transistors (HBTs) and field-effect transistor, bipolar field-effect transistors (BiFETs). Also in 2006, the group made a further acquisition in the form of Singapore based MBET technologies which provided the group with complete multi-site, multi-technology and multi-product capabilities to form the world's largest independent contract manufacturer of epitaxial wafers. In 2009 the group added new free-standing
gallium nitride Gallium nitride () is a binary III/ V direct bandgap semiconductor commonly used in blue light-emitting diodes since the 1990s. The compound is a very hard material that has a Wurtzite crystal structure. Its wide band gap of 3.4 eV affords ...
(GaN) substrate capability with the acquisition of NanoGaN, a spin out start-up from the University of Bath. In 2012, IQE Group acquired Galaxy Compound Semiconductors, based in Spokane, Washington, US, and MBE epitaxy manufacturing unit of RFMD, based in
Greensboro, North Carolina Greensboro (; formerly Greensborough) is a city in and the county seat of Guilford County, North Carolina, United States. It is the List of municipalities in North Carolina, third-most populous city in North Carolina after Charlotte, North Car ...
, US. The company made a Regulatory News Service, stock exchange announcement on 12 November 2018 that shipments of its product would be materially reduced, also materially affecting profitability, causing the share price to plunge. The joint venture CSDC was acquired by IQE in October 2019. IQE had held 51% of shares through MBE Technologies at the time it was formed in March 2015.


References


External links

* {{DEFAULTSORT:Iqe Companies based in Cardiff Silicon wafer producers 1999 initial public offerings Companies listed on the Alternative Investment Market Semiconductor companies of the United Kingdom