The degradation of organic solar cells: from chemistry to device physics through materials

Abstract

The commercialisation of organic solar cell technology relies on three pillars: high efficiency, low cost, and high stability. Thus, long lifetime and reliability of the cells must be satisfied in this equation. The future of the performance of organic solar cell technology should not only focus on efficiency but also stability. We can only achieve the above through the understanding of the phenomena that hinder the advancement of the technology. By understanding the fundamental mechanisms involved in the degradation of organic solar cells, which lead to their short lifetime, one can unlock the key to their future commercialisation. Our contribution in this regard is threefold. First, we investigate the mechanisms behind the degradation behaviour of state-of-the-art organic solar cells. Second, we identify the differences in the contribution of the active layer materials to the phenomenon. Finally, we propose a way to more stable organic solar cells.