The impact of selenisation on damp heat degradation of the CIGS back contact molybdenum

Molybdenum (Mo) degrades under the influence of damp heat, thereby reducing the output of CIGS PV. In this study, Mo layers were deposited on a glass substrate by magnetron sputtering, thereby varying the deposition pressure and the addition of selenium. These samples were thoroughly analysed and degraded at 60oC/60% relative humidity (RH) and 85°C /85% RH.