Efficiency booster: irradiation of power semiconductors

How does electron irradiation of power semiconductors work?

Electron irradiation involves the targeted introduction of high-energy electrons into the semiconductor material. These create defects in the crystal lattice that specifically influence the electrical conductivity. In contrast to thermal processes such as doping with diffusion, the chemical composition of the material remains unchanged.

The most important advantages summarized:

• No additional doping elements: The chemical composition of the semiconductor remains unchanged, avoiding unwanted interactions or material changes.
• Treatment at room temperature: As electron irradiation takes place at low temperatures, the crystal lattice of the semiconductor is protected, and its structural integrity is preserved.
• High reproducibility & flexibility: By precisely adjusting the electron fluence and irradiation energy, the electrical properties can be precisely controlled and consistently reproduced.

“Electron irradiation enables us to modify the physical properties of power semiconductors in a targeted manner. By precisely controlling the defects in the crystal lattice, we can minimize switching losses and significantly increase the efficiency of the components. This leads to higher performance and a longer component service life, which offers a decisive advantage in many high-performance applications. As an expert in electron irradiation at BGS, I help our customers to realize the full potential of their products.”

Areas of application: Which industries benefit?

The irradiation of power semiconductors is primarily used in demanding areas and is utilized in industries such as these:

• Intelligent power grids (smart grids)
• Industrial drive technology
• E-mobility