A unique co-evaporation scheme to form complex HTS coatings
In the beginning 90s we developed a unique co-evaporation scheme at the Technical University of Munich. It allows high vacuum deposition of complex HTS films (e.g. YBa2Cu3O7) and became the cornerstone for THEVA.
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HTS coated conductors – the enabler for future power engineering
THEVA uses a proprietary coating technology to fabricate flexible HTS coated conductor tape, the base material for all kinds of electrical power applications.
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Rediscovering evaporation
Evaporation is one of the oldest and commercially most successful coating techniques. Examples are industrial scale metallizations (wrapping, reflectors, decoration).
However, complex compounds and oxides are hardly produced by this method under high vacuum conditions. Other techniques are the preferred choice for these materials, even if they are slow. Whenever applicable in production, however, evaporation has clear economic benefits, because it allows high rate deposition on large area, i.e. high throughput.
After the discovery of high temperature superconductors, THEVA has demonstrated how to utilize evaporation even for these complex copper oxide compounds (cf. box).
By subtle processing and the development of reliable proprietary components, such as the Smart E-vaporator, THEVA has virtually rediscovered evaporation. Latest developments are reel to reel deposition of long, flexible metal tapes with air-to-air processing (TapeGate), or a high-rate metallization scheme combining high yield and thickness uniformity.
