Aixtron
German semiconductor equipment company supplying deposition and epitaxy systems for compound, organic and nanomaterial-based electronic and optoelectronic devices.
Last updated August 31, 2026
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Overview
Aixtron SE is a German semiconductor-equipment company headquartered in Herzogenrath near Aachen. It develops and supplies chemical-vapour-deposition equipment used by manufacturers of electronic and optoelectronic devices. Aixtron does not generally manufacture finished chips or semiconductor devices; instead, its systems enable customers to deposit and grow highly controlled material layers on wafers and other substrates. The company is particularly associated with metal-organic chemical vapour deposition, or MOCVD, a process widely used for producing compound-semiconductor structures. Its equipment supports material systems including gallium nitride, gallium arsenide and related III-V compounds, as well as applications involving silicon carbide, organic semiconductors, carbon nanotubes and other nanostructures. These technologies serve markets such as light-emitting diodes, laser and photonic devices, radio-frequency communications, power electronics, electric-vehicle power conversion and other advanced electronic applications. Aixtron’s systems include reactor configurations based on planetary wafer rotation and close-coupled showerhead deposition. These designs are intended to improve layer uniformity, throughput, material efficiency and repeatability in volume production. The company also develops plasma-enhanced chemical vapour deposition equipment for selected nanomaterial and advanced-material applications. Manufacturing and engineering activities have been associated with sites in Germany and the United Kingdom. Aixtron began in 1983 as a spin-out connected with RWTH Aachen University. It entered the Frankfurt capital market in 1997 and subsequently expanded through acquisitions, including businesses in the United Kingdom, Sweden, the United States and the United Kingdom’s nanomaterials sector. Its 2005 combination with American rival Genus broadened its technology base, while the 2010 conversion from a German Aktiengesellschaft into a Societas Europaea reflected its European and international operating structure. The company’s development has followed cycles in compound-semiconductor and optoelectronics capital expenditure. Strong investment in LED manufacturing helped raise demand for MOCVD tools, while later growth opportunities came from gallium-nitride power and radio-frequency devices, silicon-carbide applications and other advanced semiconductor markets. Aixtron has also restructured or divested activities that did not fit its long-term equipment focus, including the sale of its ALD/CVD memory-product line in 2017 and the separation of its OLED activities into APEVA SE. A proposed acquisition by Fujian Grand Chip Investment Fund in 2016 was blocked after German authorities withdrew approval and United States national-security concerns were raised. The episode underscored the strategic importance of semiconductor-manufacturing equipment and left Aixtron as an independent listed company. Its shares trade on the Frankfurt Stock Exchange, and the company has been included in German equity indices including the MDAX and TecDAX. Current demand remains dependent on customers’ fab-expansion plans, technology transitions and regional semiconductor investment cycles.
History
Aixtron was established in 1983 as an industrial spin-out associated with RWTH Aachen University. Its early development focused on equipment and processes for depositing semiconductor materials, especially the compound-semiconductor structures used in optoelectronic and electronic devices. Over time, the company commercialised MOCVD and related CVD technologies as production tools for manufacturers of LEDs, lasers, radio-frequency components, power devices and other advanced products. A major phase of expansion followed the company’s public listing on the Frankfurt Stock Exchange’s Neuer Markt in November 1997. In 1999 Aixtron acquired the Scientific Equipment Division of Thomas Swan & Co. in the United Kingdom and Swedish CVD-equipment maker Epigress AB. These transactions expanded its technology portfolio and geographic reach. In March 2005, Aixtron completed a merger valued at approximately €118 million with U.S. competitor Genus Inc. The company later acquired Nanoinstruments Ltd., a Cambridge University spin-out developing nanomaterial equipment, in 2007. In December 2010, Aixtron changed its legal form from a German Aktiengesellschaft to a Societas Europaea, or European Company. The change reflected the company’s international business structure. Its equipment portfolio covered deposition for III-V compound semiconductors and organic semiconductors, as well as selected nanomaterials. Reactor designs included planetary systems, in which wafers rotate during deposition, and close-coupled showerhead systems. Aixtron became the target of a proposed acquisition by Fujian Grand Chip Investment Fund in 2016. The transaction was controversial after Sanan Optoelectronics cancelled an important Aixtron order shortly before the bid, an event described in public accounts as potentially connected to the subsequent lower offer. German authorities withdrew their approval, and the U.S. Committee on Foreign Investment in the United States recommended that the parties abandon the transaction because of national-security concerns. The bid did not proceed. The company continued restructuring in the following years. In 2017 it sold its ALD/CVD memory-product line, manufactured in Sunnyvale, California, to South Korean company Eugene Technology. Its OLED activities were separated into APEVA SE in October 2017. In October 2018 Aixtron announced an agreement with Korean company IRUJA to invest jointly in APEVA. These steps reflected an effort to focus resources and seek partners for businesses outside the company’s strongest compound-semiconductor equipment franchises. Aixtron remains an independent, publicly traded German technology company. Its principal business is the development and supply of deposition equipment rather than the manufacture of finished semiconductor devices. Its customers’ capital expenditure, technology choices and expansion plans in LEDs, power electronics, communications and other compound-semiconductor markets strongly influence order patterns. The company’s strategic relevance derives from its role in enabling the controlled growth of semiconductor layers used in advanced electronic and optoelectronic components.
- 2018
IRUJA investment agreement
[1]Aixtron announced a joint-venture agreement with IRUJA involving investment in APEVA.
- 2017
Memory-product line sold
[1]Aixtron sold its ALD/CVD memory-product line to Eugene Technology.
- 2017
APEVA established as separate company
[1]The OLED business became a separate company, APEVA SE.
- 2016
Takeover proposal abandoned
[1]The proposed Fujian Grand Chip acquisition was stopped after German and U.S. regulatory concerns.
- 2010
Conversion to Societas Europaea
[1]Aixtron changed its legal form from Aktiengesellschaft to Societas Europaea.
- 2007
Nanoinstruments acquired
[1]Aixtron bought Nanoinstruments Ltd., a Cambridge University spin-out focused on nanomaterial development.
- 2005
Merger with Genus
[1]Aixtron completed an approximately €118 million merger with U.S. rival Genus Inc.
- 1999
Expansion through two acquisitions
[1]Aixtron acquired the Scientific Equipment Division of Thomas Swan & Co. and Swedish CVD-equipment company Epigress AB.
- 1997
Frankfurt listing
[1]The company was listed on the Frankfurt Stock Exchange’s Neuer Markt in November.
- 1983
Aixtron founded
[1]Aixtron was created as an industrial spin-out associated with RWTH Aachen University.
Products and positioning
Specialist supplier of deposition and epitaxy equipment for compound semiconductors, organic electronics and advanced nanomaterials.
Semiconductor deposition equipment
MOCVD systems
Metal-organic chemical vapour deposition systems are Aixtron’s best-known product family. They grow controlled epitaxial layers of compound-semiconductor materials on wafers and are used in volume production of LEDs, laser devices, radio-frequency components and power semiconductors. System configurations are designed around throughput, wafer uniformity, process repeatability and production economics.
Epitaxy equipment
Compound-semiconductor epitaxy systems
These systems support the deposition and epitaxial growth of III-V and other compound-semiconductor materials, including gallium nitride and gallium arsenide. They are used by device and wafer manufacturers serving optical communications, wireless infrastructure, sensing, lighting and power-electronics markets.
Chemical vapour deposition equipment
CVD systems
Aixtron develops chemical-vapour-deposition tools for electronic and optoelectronic applications. The portfolio includes processes beyond conventional MOCVD and has historically covered equipment for organic semiconductor materials and selected advanced-material applications.
Advanced-material deposition equipment
PECVD and nanomaterial systems
Plasma-enhanced chemical vapour deposition equipment is used for producing carbon nanotubes, nanofibres and other nanostructures. This part of the portfolio reflects Aixtron’s broader activity in controlled deposition processes for emerging electronic and material technologies.
Power-semiconductor equipment
Silicon-carbide deposition equipment
Aixtron’s deposition activities include equipment relevant to silicon-carbide material and power-semiconductor manufacturing. Such tools support the development of high-efficiency power devices used in applications including electric mobility, industrial power conversion and energy systems.
Controversies
2016
Controversy surrounding Fujian Grand Chip takeover bid
A proposed takeover by Fujian Grand Chip was surrounded by allegations that a cancelled Sanan Optoelectronics order had helped depress Aixtron’s share price before the offer. German authorities withdrew approval, while U.S. national-security concerns contributed to the transaction’s abandonment. Public descriptions characterize the matter as a disputed and politically sensitive takeover episode; the acquisition was not completed.
Brand decisions
2018
Agree investment partnership with IRUJAM&ABackground
Aixtron sought a partner for APEVA and its OLED deposition technology.
Action taken
Aixtron announced a joint-venture agreement with Korean company IRUJA to invest in APEVA.
Aftermath
The agreement represented an attempt to provide APEVA with strategic and financial support.
2017
Sell ALD/CVD memory-product lineStrategyBackground
Aixtron was restructuring its portfolio and seeking a clearer path to profitability.
Action taken
The company sold its Sunnyvale-produced ALD/CVD memory-product line to South Korean Eugene Technology.
Aftermath
The divestment reduced exposure to that product area while Aixtron concentrated on its core deposition activities.
2017
Separate OLED operations into APEVAStrategyBackground
Aixtron was restructuring its OLED business and looking for partnerships to support the technology.
Action taken
The OLED business was made a separate company, APEVA SE.
Aftermath
The separation enabled Aixtron to pursue outside partnerships and investment for OLED deposition activities.
2016
Reject or abandon Fujian Grand Chip acquisitionM&ABackground
Fujian Grand Chip proposed acquiring Aixtron, but the bid became subject to German and U.S. national-security scrutiny.
Action taken
German authorities withdrew approval, and CFIUS recommended that the parties drop the transaction.
Aftermath
The takeover did not close and Aixtron remained independent.
2010
Adopt the Societas Europaea legal formStrategyBackground
Aixtron operated across European and international markets and sought a legal structure reflecting that profile.
Action taken
In December 2010, the company converted from a German Aktiengesellschaft into a Societas Europaea.
Aftermath
Aixtron continued operating as an internationally oriented European public company.
2005
Merge with Genus Inc.M&ABackground
Aixtron sought to expand its semiconductor-equipment capabilities and international scale through a combination with U.S. rival Genus.
Action taken
The companies completed a merger valued at approximately €118 million in March 2005.
Aftermath
The transaction broadened Aixtron’s technology and geographic base, although later portfolio changes reshaped the company’s focus.
Recent events
Aixtron raises full-year guidance[3]
Reported:
Aixtron raised its full-year guidance for order intake and revenues, citing large orders and expected strong customer demand.
Sources3 sources
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