[5p-PA3-1~46] 12.5 Organic solar cells

[5p-PA3-22] Perovskite solar cells prepared by a new 3-step method including a PbI₂ scavenging step

〇Yuji Okamoto¹, Yoshikazu Suzuki¹ (1.Tsukuba Univ.)

Keywords:perovskite solar cells, 3 step method, additional spin-coating

The preparation process of perovskite solar cells is usually categorized into the 1-step and 2-step methods. The 2-step method has some problems of rough surface structure of the perovskite film and residual unreacted PbI₂. In this study, we additionally spin-coated MAI, MABr and those mixed solution on the perovskite film prepared by 2-step method to improve the film morphology and to scavenge the residual PbI₂, which resulted in the improved photovoltaic performance.