Production method for inverted multi-junction metamorphic solar cell (IMM solar cell)

摘要

A method of making an inverted multi-junction metamorphic solar cell (IMM solar cell) comprising: Forming a first subcell (12) on a temporary substrate (30); Forming a second subcell (14) on the first subcell (12), the second subcell having a smaller bandgap than the first subcell; Forming a first metal grid layer (18) having a plurality of gratings on the second subcell (14); Depositing an antireflection coating (22) on exposed portions of the second subcell (14) between grids of the first metal grid layer (18); Providing a silicon subcell (16); Forming a second metal grid layer (20) having a plurality of gratings on the silicon subcell (16); Depositing an antireflection coating (24) on exposed portions of the silicon subcell (16) between grids of the second metal grid layer (20); Bonding the second subcell (14) to the silicon subcell (16) such that the antireflection coating (22) faces the second subcell (14) of the silicon subcell (16), wherein binding of the second subcell (14) to the second subcell (14) Silicon subcell (16) comprises providing metal to metal bonds between the first and second metal grid layers (18, 20) of the second subcell and the silicon subcell; and Removing the temporary substrate (30).