AIXTRON SE operates upstream in the electronics manufacturing chain: the company does not produce chips, but rather the machines used to grow some of their active layers. Based in Herzogenrath, near Aachen, Germany, it supplies deposition systems to semiconductor manufacturers and research institutions. Its focus is primarily on compound materials, whose properties meet needs that silicon does not always address as effectively.
Origins rooted in German research
Founded in 1983 on the basis of research conducted at RWTH Aachen University, AIXTRON developed its business around epitaxy, the controlled growth of crystalline layers on a substrate. This step is crucial to achieving the desired electrical or optical characteristics in a component. The company gradually moved its equipment from laboratories to industrial production lines.
Listed on the Frankfurt Stock Exchange in 1997, it expanded internationally as compound semiconductors grew in importance, particularly in Asia. Its history is closely linked to that of LEDs, followed by the diversification of these materials’ applications in lasers, communications and energy conversion.
Reactors for controlling material layers
The core of AIXTRON’s offering consists of metalorganic chemical vapor deposition equipment, or MOCVD. In these reactors, chemical precursors are used to deposit extremely thin layers while controlling their composition and uniformity. The company also offers chemical vapor deposition systems designed for silicon carbide.
The materials involved include gallium nitride, gallium arsenide and silicon carbide. Their end uses vary: power components for electric vehicles and energy infrastructure, radio-frequency devices, lasers for optical transmission, and LEDs and microLEDs for displays. AIXTRON thus serves several markets without depending on a single chip architecture.
For its customers, the challenge goes beyond a material’s performance in the laboratory. Results must be reproduced across batches of substrates, defects minimized and production costs controlled. The value of the equipment therefore also lies in its productivity, stability and integration into industrial processes. Services, maintenance and technical support complement machine sales.
What next?
AIXTRON’s prospects depend in particular on the adoption of gallium nitride and silicon carbide in power electronics. Transport electrification, electrical power conversion and the energy needs of data centers are potential growth drivers. MicroLEDs represent another avenue, whose timeline remains tied to the challenges of scaling up production and to costs.
This exposure comes with pronounced cyclicality: orders follow component manufacturers’ investments in capacity. For AIXTRON, the challenge is to adapt its platforms to changing substrate formats and yield requirements while adjusting to the trade and geopolitical constraints affecting the semiconductor industry.