HIGH-EFFICIENCY SOLAR CELL STRUCTURES AND METHODS

摘要

Solar cells include a substrate consisting essentially of silicon, a first junction disposed over the substrate, the first junction comprising at least one III- V material and having a threading dislocation density of less than approximately 107 cm-2, and a cap layer disposed over the first junction, the cap layer comprising silicon. Methods for forming solar cells include forming, over a substrate, a first junction comprising at least one III- V material and having a threading dislocation density of less than approximately 107 cm-2, and forming, over the first junction, a cap layer comprising silicon, wherein the substrate consists essentially of silicon.