A polymer scaffold for self-healing perovskite solar cells

Advancing of the lead halide perovskite solar cells towards photovoltaic market demands large-scale devices of high-power conversion efficiency, high reproducibility and stability via low-cost fabrication technology, and in particular resistance to humid environment for long-time operation. Here we achieve uniform perovskite film based on a novel polymer-scaffold architecture via a mild-temperature process. These solar cells exhibit efficiency of up to ∼ 16% with small variation. The unencapsulated devices retain high output for up to 300 h in highly humid environment (70% relative humidity). Moreover, they show strong humidity resistant and self-healing behaviour, recovering rapidly after removing from water…

• NN
  National Natural Science Foundation of China

  Awards: 11327902, 61571015, 2013CB932602, NSFC51272007, 91433102, 11234001
• PF
  Program for New Century Excellent Talents in University
• BN
  Beijing Nova Program

  Award: XX2013003