Document Type : Original Article

Authors

• Mahsa Seifpanah Sowmehsaraee ¹
• Maryam Ranjbar ²
• Mohammad Abedi ¹

¹ Department of Chemical Technologies, Iranian Research Organization for Science and Technology (IROST)

² Chemical Technologies Department Iranian Research Organization for Science and Technology (IROST)

Abstract

In this study, pure phase nanostructured strontium-doped lanthanum manganite, La0.75Sr0.25MnO3 (LSM), with a hexagonal structure was synthesized by sonochemical method. Then, XRD and SEM estimated the size of the LSM nanopowders. The results are exhibited that products synthesized in this method are compatible with particle size and morphology. Magnetic measurement was done by vibrating sample measurement (VSM) on LSM nanoparticles at room temperature. According to the results obtained from VSM displayed the saturation magnetization of LSM nanoparticles exhibited a maximum of 24.25 emu/g at room temperature. Then, the influence of LSM nanoparticle as an additive on the film morphology of CH3NH3PbI3 and the performance of perovskite solar cells was examined. We explore by using 5wt % of additive can increase the short current density (Jsc) from 14.45±0.55 to 18.29±0.38 mA/cm2 (~ 26.5 % enhancement) and power-conversion efficiency (PCE) from 8.33±0.40 to 12.41±0.35 (~ 49 % enhancement). Moreover, the morphology, and band gap of the new perovskite layer was improved.

Keywords

• Lanthanum strontium manganite
• Perovskite
• VSM
• Solar cells
• additive