[7p-S201-1~19] 12.5 Organic and hybrid solar cells

5:45 PM - 6:00 PM JST(8:45 AM - 9:00 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation AwardEnglish Presentation

[7p-S201-17] Unveiling the Impact of RbX (X = I, Br, Cl) Intercalation on the Stability and Performance of MAPbI₃-Based Perovskite Solar Cells

〇(DC)Neng Hani Handayani¹, Md. Shahiduzzaman¹, Masahiro Nakano¹, Makoto Karakawa¹, Koji Tomita², Jean Michel Nunzi¹, Tetsuya Taima¹ (1.Kanazawa Univ., 2.Tokai Univ.)

Keywords:

RbX Intercalation,Vacuum Deposition,Stability

We report the halide-dependent intercalation of rubidium halides (RbX; X = I, Br, Cl) into MAPbI₃ perovskite films via vacuum deposition to enhance the performance and stability of perovskite solar cells (PSCs). RbX was introduced at both interfaces of the MAPbI₃ layer, improving crystallinity, enlarging grain size, and reducing defect density. Among the materials, RbBr delivered the highest efficiency, while RbCl provided the best light soaking stability. After 200 minutes of light exposure (RH 45%-60%), devices with RbI, RbBr, and RbCl retained over 80%, 75%, and 81% of their initial PCE, respectively, compared to 53% for the pristine MAPbI₃ device. These results demonstrate the potential of RbX intercalation for advancing stable and efficient PSCs through targeted interface engineering.