The Study of Optical and Electrical Properties of Solar Cells With Oblique Incidence

The optical and electrical properties of organic solar cells with metallic Ag incorporating into the PEDOT:PSS layer in the case of oblique incidence are numerically investigated based on in house finite-difference frequency-domain code. It is found that the light absorption decreases with the increase of incident angle, and the absorption enhancement varies slightly due to the contribution of the broadband surface plasmon (SP)-mode. Since the absorption reduces at large incident angle, the short-circuit current undoubtedly decreases, thus fill factor and power conversion efficiency reduce accordingly. However, there is little variety of open-circuit voltage, which indicates that open-circuit voltage is independent of incident angle. Our results can be used as a reference for better understanding of the optical and electrical properties of organic solar cells with oblique incidence.