92　カーボン系多層多孔質ペロブスカイト太陽電池におけるRbCsCH(NH₂)₂PbI₃光吸収体の結晶化制御

抄録

Fully printable carbon-based multiporous layered electrode perovskite solar cells (MPLE-PSCs) are scalable, high stability and manufactured by using fully non vacuum processes. Typically, CH₃NH₃PbI₃ with 5−ammonium valeric acid iodide (5-AVA-MAPbI₃) is used as the light absorbing material, but it leads to overestimated performance due to scan rate variations in current density-voltage (J-V) measurements. This study introduces RbCsCH(NH₂)₂PbI₃ as an alternative material to address this issue and improve crystallization control. The solar cells were fabricated using spray pyrolysis (compact TiO₂) and screen printing to deposit mesoporous layers (TiO₂, ZrO₂ and carbon). Results show the solar cells using RbCsCH(NH₂)₂PbI₃ suppressed the variation of current density for low-speed scanning, compared with 5-AVA-MAPbI₃.