Degradation and stabilityMorten Vesterager Madsen
Polymer solar cells generally present significant degradation when operated.DOI:10.1016/j.solmat.2008.01.005DOI:10.1002/adma.201104187 The degradation is of course linked to both intrinsic and extrinsic stability. Examples of extrinsic stability deficiencies relate to corrosion of interconnections, yellowing of the encapsulation material or similar; typically traits shared between different solar cell technologies. Intrinsic stability relate to the stability of the materials, the interfaces within the solar cell, etc. The intrinsic stability of the solar cell is in many ways the most interesting from a scientific viewpoint. If a material is not intrinsically stable, the final device will suffer or strong measures must be taken to circumvent the problems of the material.
Within the last years the interest for the stability of polymer solar cells have increased tremendosly and with good reason. As we learned from the unification challange, the stability is equally important for the final device, on par with the power conversion efficiency and fabrication. In this section of the website you will learn why polymer solar cells degrade, and you will find information on physical and chemical degradation mechanisms, as well as examples of specific degradation. You will also learn about accelerated testing, controlled atmosphere testing, and encapsulation.DOI:10.1016/j.solmat.2008.01.005 DOI:10.1002/adma.201104187 Frederik C. Krebs, Stability and Degradation of Organic and Polymer Solar Cells, Wiley Frederik C. Krebs, Polymeric Solar Cells - Materials, Design, Manufacture Frederik C. Krebs, Polymer Photovoltaics: A Practical Approach, SPIE Press