Patent ID: 8779462

Claim:
A semiconductor substrate comprising a high-ohmic semiconductor material with a conduction band edge and a valence band edge, separated by a bandgap, wherein the semiconductor material comprises a base doping and donor impurity atoms different from the base doping or a base doping and crystal defects, wherein energy levels of the donor impurity atoms or crystal defects are located at least 120 meV from the conduction band edge, as well as from the valence band edge in the bandgap, wherein the donor impurity atoms comprise selenium (Se), wherein a concentration of the selenium is larger than 1×10 12 cm −3 and lower than 1×10 17 cm −3 , wherein the semiconductor substrate is a silicon substrate, wherein the base doping is a p-type base doping, wherein the semiconductor substrate includes an electronic device zone comprising the selenium (Se) atoms, wherein at least 50% of the volume of the semiconductor substrate comprises the semiconductor material with said donor impurity atoms or crystal defects, and wherein a region of the semiconductor substrate comprising the selenium atoms forms at least a portion of a drift or base region of the electronic device.