Life prediction for CIGS solar modules part 2: degradation kinetics, accelerated testing, and encapsulant effects (pages 173–186)
Dennis J. Coyle, Holly A. Blaydes, Rebecca S. Northey, James E. Pickett, Kaustubh R. Nagarkar, Ri-An Zhao and James O. Gardner
Version of Record online: 11 OCT 2011 | DOI: 10.1002/pip.1171
Measured degradation kinetics of copper indium gallium di-selenide solar cells are used in a life model based on diffusion of water through a module package subjected to weather conditions. Cells with an aluminum-doped zinc oxide window layer degrade 25× faster than cells using indium tin oxide, the electrically conducting adhesive used in flexible contacts can be a major factor in degradation, and predictions of longer life with thicker layers of high-water-solubility encapsulants are confirmed experimentally.