The company said the alloy has good adhesion to glass and a high electrical conductivity, though molybdenum can be prone to oxidation on exposure to corrosive atmospheres.
The company alloys pure molybdenum with small amounts of corrosion-resistant tantalum, combining the properties of both metals.
PLANSEE stated the new product avoids negative effects during the manufacturing process and the solar module operation, and the corrosion resistance of MoTa has been proven in numerous tests.
On polymer-based substrates like polyimide, the high water and oxygen permeation can result in an increased corrosion of the CIGS back contact, which can be minimized by MoTa.
