Magnetic Properties in CH3NH3PbI3 Perovskite Thin Films by Mn Doping

In recent years, perovskite halide compounds have attracted attention for the fabrication of highly efficient solar cells, light-emitting diodes, and X-ray detection. However, a comprehensive understanding of their microscopic origins has not been fully explored. In this work, the effect of Mn doping in organic-inorganic perovskite semiconductor methylammonium lead iodide (CH3NH3PbI3) has been studied. The existence of magnetism in CH3NH3PbI3 (MAPbI(3)) has been confirmed by magnetization measurements at room temperature. A drastic enhancement in magnetic moment is obtained in Mn (15%)-doped MAPbI(3). The influence of Mn doping in MAPbI(3) films has been analyzed for structural and morphological changes. Roomtemperature ferromagnetism is achieved by the incorporation of Mn 26 /Mn 36 ions into Mn (3-20%)-doped MAPbI(3) films by the effect of eminent double-exchange and superexchange interactions in between the Mn2+-I--Mn 36 ions compared with other doping content. Our finding offers an alternative pathway for spintronic, light-controlled magnetic and photovoltaic devices.

Automated summary

This study investigated the effects of Mn doping in methylammonium lead iodide, revealing a drastic enhancement in magnetic moment and the achievement of room-temperature ferromagnetism. The incorporation of Mn ions into the films resulted in structural and morphological changes, offering a potential pathway for spintronic and light-controlled magnetic devices.