US Patent Issued to Azur Space Solar Power on May 12 for "Passivation method for a passage opening of a wafer" (German Inventor)

ALEXANDRIA, Va., May 12 -- United States Patent no. 12,628,461, issued on May 12, was assigned to Azur Space Solar Power GmbH (Heilbronn, Germany).

"Passivation method for a passage opening of a wafer" was invented by Alexander Frey (Heilbronn, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "A passivation method for a passage opening of a wafer, at least having the steps of: providing a wafer having a top, a bottom and comprising a plurality of solar cell stacks, wherein each solar cell stack has a Ge substrate that forms the bottom of the wafer, a Ge sub-cell, at least two III-V sub-cells, in the named order, and at least one passage opening extending from the top to the bottom of the wafer, with a c...