Study of efficiency enhancement in layered geometry of excitonic-plasmonic solar cell

The nano-plasmonic effect on the organic solar cell (OSC) considering different materials, thickness, configurations and geometry has been considered. A theoretical modelling based on exciton-plasmon coupling using first principle approach was done to see the effect of incident photon to current collection efficiency of OSC in the direction to achieve efficient light trapping. For the present numerical model, uniform sized silver Nanoparticle were considered to be embedded in the active layer poly-(4’-(1”, 4”, 7”-trioaoctyl) phenyl) thiophanyl (PEOPT) of OSC. The coupling of local electromagnetic field due to metallic nano-plasmonic antenna resulted in the enhanced overall performance of the OSC. Optimized efficiency calculations suggested that there is nearly 1.6 % of enhancement in the efficiency (IPCE) due to plasmonic coupling to excitonic cell.