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.