探索La掺杂CeNiO3钙钛矿的光学、介电和光伏特性

Thermal stability, toxicity, and sensitivity to moisture are major challenges associated with the long-term performance of perovskite-based solar cells. CeNiO 3 is a stable, lead free, and easy to fabricate perovskite material. It is currently being investigated for supercapacitor anode and photocatalytic applications due to its s stable structure and long cyclic stability. This study discovered that pure CeNiO3, with its 1.25 eV bandgap, effectively absorbs a significant portion of the visible solar spectrum, and La-doping converts narrow bandgap CeNiO 3 into a wide bandgap semiconductor (4.77 and 4.85 eV). Dielectric studies indicated reduced energy dissipation in La-doped samples, particularly the 10% La-doped CeNiO 3 , which exhibited minimal dissipation across all incoming frequencies and enhanced AC conductance at higher frequencies. This, coupled with the wide bandgap, makes La-doped CeNiO 3 a promising candidate for power electronics applications. The significant short-circuit current density and fill factor (FF) values of pure CeNiO 3 in ZnO/CeNiO 3 /PANI solar cell devices confirm effective light absorption and efficient conversion of incident photons into electrical carriers, resulting in an impressive 8.1% efficiency.