[20a-G202-1~10] 12.5 Organic solar cells

▲ [20a-G202-2] Role of Additive and Solvent Vapor Annealing in the Performance of Perovskite Solar Cells Fabricated in Ambient Air

〇(DC)Vincent Obiozo Eze¹, Hiroyuki Okada¹, Yoshiyuki Seike¹, Tatsuo Mori¹ (1.Aichi Inst. of Tech.)

Keywords:Additive, Solvent vapor annealing, Perovskite solar cells

It is a well-known fact that MAPbI₃ perovskite is susceptible to decomposition in the presence of moist air. Therefore it is important to develop a simple approach to deposit uniform and homogenous perovskite on a planar substrate in ambient air for low-cost mass production. In this study, we investigated the influence controlling the nucleation and crystallization of MAPbI₃ perovskite layer fabricated in air through a combination of the addition of 1, 8-diiodooctane (DIO) additive in the perovskite precursor and solvent vapor annealing (SVA). The SEM and XRD results suggest that the morphology and crystallinity of with additive+SVA were improved, thereby leading to a higher power conversion efficiency (PCE) of 10.23%.