article · Scientific Reports
Abstract This work addresses enhancing the performance of Perovskite solar cells by incorporating ellipsoid plasmonic nanoparticles of Titanium Nitride (TiN) into the pure methylammonium lead iodide (CH 3 NH 3 PbI 3 ) active layer. The device structure consists of ITO/TiO 2 /CH 3 NH 3 PbI 3 /PEDOT: PSS/Au. The study is conducted using finite difference time domain method for the optical studies and SCAPS-1D software for the electrical parameters, the proposed structure managed to boost the absorption of the perovskite solar cell to levels more than 90% in the visible and near infrared range (NIR), and a broad absorption band from 400 nm to 1200 nm is obtained, which is reflected as an electrical performance with short circuit current density of 46.84 mA/ cm 2 , and open circuit voltage of 0.8924 V, a fill factor of 76.22%, and an impressive power conversion efficiency of 31.8%. These results showcase the plasmonic potential of TiN refractory metal nanoparticles in enhancing the performance of perovskite solar cells.
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DOI: 10.1038/s41598-026-37468-0
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