Investigating the Usage of Nanohole Array-Based Plasmonic Silver Electrodes in ITO-Free Organic Solar Cells

Organic solar cells OSCs have attracted great interest due to their low cost, light weight, and flexibility. However, their efficiencies still need to be improved for many practical applications. The most conventional electrode for OSCs is indium tin oxide ITO which does not present high flexibility and robust mechanical properties. Additionally, this material is not appropriate for mass production due to the limited indium reserves. Here, we have proposed nanohole array-based plasmonic silver electrodes in order to design ITO-free OSCs. Numerical simulations based on finite-difference time-domain FDTD method have been employed to minimize the reflectance of the OSC while increasing the photoactive layer absorption. The designed nanostructure is a great potential to realize large-area and flexible energy harvesting.