Patent ID: 8772140

Claim:
A method of producing a unipolar semiconductor component having a drift layer, the method comprising forming the drift layer with a continuously decreasing concentration of charge-carrier doping along a growth direction of the drift layer by epitaxial deposition of a material of the drift layer which comprises at least one wide-bandgap material, wherein the drift layer has a layer thickness (d Epi ) that is determined by a preferred breakdown voltage (V Br ) of the drift layer and a preferred maximum electric field (E max ) of the drift layer, where: d Epi = 2 ⁢ ⁢ V Br E max · f ⁡ ( λ ) h ⁡ ( λ ) ; f ⁡ ( λ ) = 2 ⁢ 1 + λ - 1 λ ; h ⁡ ( λ ) = 4 · { 2 3 ⁢ λ 2 ⁡ [ ( 1 + λ ) 3 / 2 - 1 ] - 1 λ } ; and λ is in a range of between 10 and 1000.