Multijunction Solar Cells using Bonding Technology with Pd Nanoparticle Array and Adhesive Material

Abstract

We report a unique bonding technology using Pd nanoparticle array and adhesive material for multijunction (MJ) solar cells. The technology, which is modified with our previous “smart stack technology”, expands the possibility of MJ solar cell. In GaAs//CuInGaSe 3-junction solar cell, a record-efficiency of 28.06% was attained.