Development of Active Organic and Polymeric Materials for Batteries and Solar Cells: Introduction to Essential Characterization Techniques

Establishing renewable energy sources is currently one of the major scientific topics. Two aspects are most crucial: energy conversion and energy storage. Thus, the development of efficient solar‐cell devices and high‐capacity, high‐current rechargeable battery systems turns out to be of great importance. In particular, the design of active materials and their characterization using electrochemical and spectroscopic means represent essential elements in the development process. Here, a concise overview of both methods and key properties with regard to the characterization of organic and polymeric active materials with a focus on energy conversion/storage is provided. Benefits and limitations of complementary techniques are presented to enable a consistent and comprehensive characterization procedure.