Schottky is a key technology, needed not only in space and scientific instruments but in virtually all mm and sub-mm equipment. Commercial applications of Schottky devices have been limited for a long time to frequencies below 100 GHz, and these needs are satisfied by several suppliers worldwide. The availability is much worse for applications at higher frequencies, but it is cruicial for scientific and commercial manufacturers of mm and sub-mm hardware in Europe.
In the group of Prof. Hartnagel at the TU Darmstadt systematic investigations on Schottky contacts have been performed since nearly 20 years resulting in numerous achievements and experience in this field. Requirements for a reliable and continous source called for a shift from academic into industrial fabrication and ultimately for a spin-off company.
Consequently, the Advanced Compound Semiconductor Technologies (ACST) GmbH has been founded with the objective of providing a continuous source for Schottky diodes. By bringing this company into being a first European supplier for this fast evolving application area is now available, supporting and strengthening the research community.
The ACST GmbH is supported by Prof. Hartnagel and his long experience in this field. An appreciable support is also provided by Prof. Meissner and Prof. Jakoby.

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