The interplay between device’s and material’s properties in determining solar cells’ performance

This contribution highlights the importance of device architecture design using a comprehensive semiconductor device model. In the context of organic PV, we show that the mobility balance is not an issue and that the only important guideline is to ensure that the lowest mobility is above 4x10^-4 cm² V^-1 s^-1 . With this out of the way, researchers could focus on more cost-effective challenges. In the context of perovskite cells, we show that since the presence of ions means that electrochemistry is at play, the traditional semiconductor device models that exclude electrochemistry are incomplete.