Abstract

Metallic gratings have drawn great attention over the past few years due to effective light trapping and power conversion efficiency enhancement in organic solar cells (OSCs). Novel OSCs incorporated short-pitch metallic grating into the conventional OSCs as the back electrode is presented. The optical and electrical properties of OSCs are investigated by applying the finite-difference frequency-domain method. It is found that the light absorption at 400–650 nm in the active layer is strongly improved, compared with the standard structure without metallic grating. The underlying physical mechanism is due to the surface plasmon resonance and the interaction between two neighbor gratings, which undoubtedly enhances the electrical properties such as short-circuit current $(J_{\mathrm{SC}})$ , fill factor, and power conversion efficiency. Meanwhile, the optical and electrical properties of OSCs with different groove widths are also investigated. With an optimal groove width of 4 nm, the overall performance of OSCs is enhanced. This paper indicates that OSCs incorporated short-pitch metallic grating are promising candidates for high-performance OSCs.

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.