CIGS Semi-transparent CIGS solar cells and method of manufacture the same and BIPV module comprising the same

摘要

A semi-transparent CIGS solar cell according to an embodiment of the present invention includes a transparent conductive substrate, a transparent conductive substrate formed on the transparent conductive substrate, A AgGaS ₂ intermediate layer having a gap larger than the light absorption layer, a CIGS light absorption layer having a band gap of 1.5 eV or more formed on the intermediate layer to a thickness of 400 nm or less, and sequentially stacking a buffer layer, a transparent conductive layer, A transparent semiconductor oxide is used as a back electrode and a CIGS light absorption layer having a band gap of 1.5 eV or more is used. As a result, a part of light in a visible light region is transmitted to form a transparent conductive substrate and a light absorption layer Since the intermediate layer having a large band gap is included between the anode and the cathode, the transparency and the efficiency of the solar cell are simultaneously improved.