Heterojunction solar cell

摘要

A high-efficiency single heterojunction solar cell wherein a thin emitter layer (preferably Ga0.52In0.48P) forms a heterojunction with a GaAs absorber layer. The conversion effiency of the solar cell is at least 25.7%. The solar cell preferably includes a passivating layer between the substrate and the absorber layer. An anti-reflection coating is preferably disposed over the emitter layer.