Researchers simulate SrHfSe₃ solar cells at University of Querétaro

Researchers from University of Querétaro, has numerically modeled a new SrHfSe₃ chalcogenide perovskite solar cell using SCAPS-1D. The cell structure was FTO/BaSnO₃/SrHfSe₃/MoS₂/Au. They analyzed the impact of each layer’s critical parameters and back metal work functions. Increasing the absorber thickness to 700 nm improved light absorption by 1.26 times. Optimizing MoS₂ enhanced the quantum efficiency in the NIR region by 1.11 times and raised the PCE from 15 % to 26 %, with conduction and valence band offsets of 0.6 eV and −1.36 eV. Adjusting the back contact work function using Ni yielded a PCE of 26.21 %. They simulated 1,627 solar cells with 40 alternative HTLs across categories and found peak PCEs of 27.87 % for SnS, 27.39 % for CPE-K, and 26.30 % for Ti₂CO₂.