Patent ID: 11859310
Assignee: AZUR SPACE SOLAR POWER GMBH
Field: Semiconductors (Electrical engineering)
Classification: CPC C  H | IPC C  H

Claim 18:
19. A vapor phase epitaxy method comprising:
growing a III-V layer with a doping that changes from a first conductivity type to a second conductivity type in a reaction chamber from the vapor phase from an epitaxial gas flow comprising a carrier gas, a first precursor for an element from main group III, and a second precursor for an element from main group V, wherein the first conductivity type is p and the second conductivity type is n;
during said growing the III-V layer, setting, when a first growth height is reached, a first initial doping level of the first conductivity type via a ratio of a first mass flow of the first precursor to a second mass flow of the second precursor in the epitaxial gas flow;
after said growth height is reached, reducing the first initial doping level to a second initial doping level of the first conductivity type by changing the ratio of the first mass flow to the second mass flow; and
increasing a mass flow of a third precursor to a level at which the doping level changes.