Patent ID: 11955334
Assignee: AZUR SPACE SOLAR POWER GMBH
Field: Semiconductors (Electrical engineering)
Classification: CPC H  C | IPC C  H

Claim 0:
1. A vapor phase epitaxy method comprising:
growing a III-V layer on a substrate in a reaction chamber from a vapor phase from an epitaxial gas flow comprising a carrier gas, at least one first precursor for Galium, and at least one second precursor for an Arsine compound;
during said growing, setting, when a first growth height of the Ill-V layer is reached, a first initial doping level 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;
during said growing, changing, stepwise or continuously, the ratio of the first mass flow of the first precursor to the second mass flow of the second precursor; and
during said growing, increasing, stepwise or continuously, a mass flow of a third Silane precursor for an n-type dopant in the epitaxial gas flow, doping of the III-V layer with a growth height of at least 10 μm being changed until a target n-doping level of at most 5·1016 cm−3 is reached.