In this paper, we have analyzed the role of single and dual nanostructures embedded in PEDOT:PSS (Poly (3,4-ethylenedioxythiophene):poly (styrenesulfonate))/c-Si Hybrid Solar Cells (HSCs) using Finite Difference Time Domain (FDTD) method. HSC structures with Nanopyramids (NPs) on top of the Si substrate exhibit optical Jsc of 35.91 mA/cm2. We obtained significant improvement in Jsc by 1.56% and 14% observed with the insertion of oxide coated Ag MNPs (Metal Nanoparticles) and Al MNPs in the rear and front end of the HSC, respectively. A comparative analysis of these three structures denoted as NP (for nanopyramids only), NP + Ag MNPs (nanopyramids with Ag MNPs embedded in the front end of the HSCs along with oxide coated MNPs in the rear end) and NP + Al MNPs (same as the second structure with Ag MNPs replaced with Al MNPs) shows that HSCs with NP + Ag MNPs and MoO3 coating achieve the highest open circuit voltage (Voc) of 0.7 V, electrical Jsc of 22.19 mA/cm2, power conversion efficiency (PCE) of 12.56% and Fill Factor (FF) of 80.85%.