SUBSTRATE MATERIAL OF IRON-NICKEL ALLOY METAL FOIL FOR CIGS SOLAR CELLS

摘要

The present invention relates to an exclusive alloy substrate material for CIGS solar cells. Particularly, the present invention provides a substrate material having a thermal expansion coefficient similar to that of a CIGS layer. The substrate material according to the present invention may prevent damage such as interlayer separation due to differing thermal expansion coefficients from occurring because the substrate material has a thermal expansion coefficient similar to that of the CIGS layer.

主权项

1. An Fe—Ni alloy metal foil substrate material for a CIGS solar cell, the Fe—Ni alloy metal foil substrate material having a grain size ranging from 0.1 μm to 10 μm and a thermal expansion coefficient ranging from 6×10−6/° C. to 12×10−6/° C.