A method of forming a multijunction
solar cell string by providing a first multijunction
solar cell including a
contact pad disposed adjacent the top surface of the multijunction
solar cell along a first
peripheral edge thereof; providing a second multijunction solar
cell disposed adjacent said first multijunction solar
cell, having a top surface and a bottom surface, and including a
cut-out extending from a second
peripheral edge along the top surface of the second solar
cell located adjacent the first
peripheral edge of said first multijunction solar cell, and extending to a
metal contact layer adjacent the bottom surface of said second multijunction solar cell to allow an electrical contact to be made to the
metal contact layer; mounting said first and said second multijunction solar cells on a first side of a perforated carrier; attaching a first
electrical interconnect to the
contact pad of said first multijunction solar cell, the
electrical interconnect extending through said perforated carrier; attaching a second
electrical interconnect to the
metal contact layer of said second multijunction solar cell, the electrical interconnect extending through said perforated carrier; and connecting said first electrical interconnect to said second electrical interconnect.