[6a-A413-1~10] 12.1 Fabrications and Structure Controls

[6a-A413-7] Lead halide perovskite films fabricated by vacuum deposition using single crystal sources

Natsuki Ueyama¹, Masatoshi Sakato¹, Takuya Yoshitomi¹, 〇Senku Tanaka¹ (1.Kindai Univ.)

Keywords:Lead halide perovskite, Vacuum deposition, single crystal

Lead halide perovskite thin films were fabricated by using lead halide perovskite single crystals as vapor deposition sources. Using a single crystal as an evaporation source realized better reproducibility of the film fabrication compared with the conventional vacuum deposition method. We succeeded to fabricate MAPbI₃, FAPbI₃ and MAPbBr₃ films with good crystallinity by using the present method. On the other hand, with a MAPbI₃/MAPbBr₃ laminated film prepared by the sequential deposition of each single crystal, changes with time in the film properties were observed, implying that a formation of mixture of MAPbI₃ and MAPbBr₃ could be occurred.