Insights into the operational stability of wide-bandgap perovskite and tandem solar cells under rapid thermal cycling

Temperature variations can induce phase transformations and strain in perovskite solar cells (PSCs), undermining their structural stability and device performance. Despite growing interest, the operational stability of triple-cation wide-bandgap (WBG) PSCs and tandem solar cells (TSCs) under rapid solar-thermal cycling remains poorly understood. Here, we investigate the operational stability of WBG PSCs (~1.68 eV) with a champion power conversion efficiency (PCE) of 24.31% and extend the study to TSCs. We find that degradation during device operation under rapid solar-thermal cycling (temperature change rate of 10 °C/min) is independent of passivation and occurs in two distinct regimes: an initial burn-in…

• ST
  Solar Technologies go Hybrid
• EC
  European Commission

  Award: 101077006
• DF
  Deutsche Forschungsgemeinschaft

  Awards: 390776260, EXC 2089/1, EXC 2089/1-390776260, EXC 2089, 2089/1-390776260
• CS
  China Scholarship Council
• TU
  Technische Universität München
• HE
  HORIZON EUROPE Framework Programme
• DE
  Deutsches Elektronen-Synchrotron