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

6:15 PM - 6:30 PM JST(9:15 AM - 9:30 AM UTC)English Presentation

[7p-S201-19] Cesium Halide-Gradient Intercalation Stabilized Perovskite Solar Cells

〇(DC)YUE FENG¹, Md. Shahiduzzaman¹, Neng Hani Handayani¹, Peng Liu¹, Masahiro Nakano¹, Makoto Karakawa¹, Jean-Michel Nunzi¹, Yoshinori Kimoto², Takuya Kato², Hiroaki Nakamura², Tetsuya Taima¹ (1.Kanazawa Univ., 2.Idemitsu Kosan Co., Ltd.)

Keywords:

CsX Intercalation,Vacuum Deposition,Thermal Stability

To address thermal instability in perovskite solar cells (PSCs), we applied interfacial CsX (X = I, Br, Cl) halide intercalation to MAPbI₃ films, leading to improved crystallinity, defect passivation, and enhanced thermal and environmental stability. Devices with CsBr achieved the highest PCE of 18.33%, with intercalated devices maintaining ~85–90% efficiency after extended thermal, humidity, and light stress tests, outperforming pristine counterparts. This strategy was further extended to CsFA-based PSCs for high-temperature space applications. CsI intercalation preserved phase integrity under 150 °C light soaking, confirming its potential for space-grade device development.