High V oc in (Cu,Ag)(In,Ga)Se2 Solar Cells

• Published in: IEEE journal of photovoltaics Vol. 7; no. 6; p. 1789
• Main Authors: Edoff, Marika, Jarmar, Tobias, Nina Shariati Nilsson, Wallin, Erik, Hogstrom, Daniel, Stolt, Olof, Lundberg, Olle, Shafarman, William, Stolt, Lars
• Format: Journal Article
• Language: English
• Published: Piscataway The Institute of Electrical and Electronics Engineers, Inc. (IEEE) 01.01.2017
• Subjects: Copper; Devices; Photovoltaic cells; Silver; Solar cells

In this contribution, we show that silver substitution for copper in Cu(In,Ga)Se2 (CIGS) to form (Ag,Cu)(In,Ga)Se2 (ACIGS) leads to a reduction of the voltage loss expressed as Eg/q – V oc. This, in turn, leads to higher device efficiencies as compared to similar CIGS devices without Ag. We report [...