Light Trapping for Absorption Control in Perovskite-based Photovoltaic Solar Cells

Abstract

Nanostructure based perovskite solar cells with high performance are the focus of study in current work, keeping in view the improvement in cell efficiency. In the first part of the study, a plane-layered solar cell is studied by adding a 1D Photonic Crystal (1D PhC) at the bottom of the cell in order to facilitate the photon rotation process. However, in the second part of the study, it is observed that the addition of grating enhances the light absorption due to photon trapping. Following that, the light absorption of three different structures is compared. The observations reveal that the short-circuit current density (Jsc) is found to be −39.93 mA/cm 2 , which is 87.29% higher than that for a planar structure exhibiting the short-circuit current density (Jsc) value of −21.32 mA/cm 2 . Finally, the efficiencies of these nanostructured perovskite solar cells are found to be significant. For the proposed solar cell structure an 87.24% improvement in the power conversion efficiency (PCE) is observed, i.e., from 14.03% for the planar structure to 26.27%.