Broadband plasmonic absorber as a solar cell with conformal arrangement and various topologies

Abstract

Abstract ─ In this paper, the conformal arrangement of the nanoparticle as a plasmonic absorber for improving the bandwidth of the solar cell is studied. The Time Domain method of finite integration technique (FIT) is used for modeling the solar cell. The studies show that the conformal structure can be used for enhancing the bandwidth of the absorber up to 120% which is covering 300 to 2400 nm and the electric field enhanced more than 30 %. The radius of the bent structure can impact absorption and bandwidth and the flexible conductive polymers can be used for making this structure practical with a refractive index of 2. Moreover, the elements' shape effect on the bandwidth, absorption level, and electrical field enhancement is considered and four various types of elements are checked. The cylindrical element shows the benefits more than other elements in bandwidth and energy harvesting which are known as two vital factors for designing a solar cell. In brief, the conformal structure can be used for manipulating electromagnetic based on Ferma's law for amending absorbers and solar cells. For this solar cell, the short circuit density (J sc ) is obtained 30mA/cm 2 and P max is increased up to 35.5 mW/cm