فهرست نشریات علمی دسترسی آزاد ایران

This paper proposes a Gaussian grating to enhance light absorption in perovskite thin-film solar cells. As gratings are effective structures for trapping light within the active layer of a cell, a two-dimensional Gaussian grating with a rectangular structure is considered for the front surface of the cell. Finite element method results demonstrate that the Gaussian grating significantly increases light absorption in a 0.5 micrometer thick cell within the visible and near-infrared range compared to a cell without a grating and a cell with a conventional or incremental grating. The average absorption of the cell with a Gaussian grating is 54.4%, representing a 68.33% increase compared to the reference cell. Moreover, the short-circuit current density and efficiency were found to be 28.72 mA/cm² and 26.18%, respectively. The proposed cell structure shows promise for improved light-to-electricity conversion.