SOLAR CELL, BACK CONTACT FOR SOLAR CELL AND METHOD OF FABRICATING THE SAME

摘要

The present invention relates to a method for controlling the thickness of a molybdenum selenide thin-film formed on a rear surface electrode while preparing the Cu(In,Ga)Se2 (CIGS) which is an absorption layer material used in a CIGS compound solar cell. The solar cell includes: a substrate; an electrode unit formed on the substrate; and a CIGS light absorption layer formed on the electrode unit. The electrode unit includes: a molybdenum layer formed on the substrate; a molybdenum nitride layer formed on the molybdenum layer; and a molybdenum selenide layer formed on the molybdenum nitride layer.