Understanding polymer additive-driven perovskite solar cell self-healing processes from a chemical and physical bonding perspective

• Perovskite solar cells ( PSCs) have received widespread attention. Recently, Hyung Do Kim of Kyoto reviewed and discussed the self-healing effect in perovskite solar cells and emphasized the importance of chemical and physical bonding as the core mechanism.

   
  

  
  

  Research has found that polymer additives play a crucial role in inducing self-healing phenomena as well as the inherent properties of perovskite materials. The authors review the self-healing effects induced by polymer additives in PSCs from a chemical perspective. Among them, those involved in self-healing Chemical bonds include isocyanate, disulfide, and carboxylic acid groups. The physical bonds related to the self-healing effect are mainly hydrogen bonds and chelation.

  
  

  
  

  The self-healing effect in flexible perovskite devices extends their lifetime and improves their mechanical stability against environmental and mechanical stress. The author provides an in-depth discussion of the starting methods, required conditions and recovery rates of self-healing, and lists various methods of self-healing.

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• Jeong-Seok Nam et. al Decoding Polymeric Additive-Driven Self-Healing Processes in Perovskite Solar Cells from Chemical and Physical Bonding Perspectives Adv. Energy Mater. 2024

  
  

  DOI:  10.1002/aenm.202304062

  
  

  https://doi.org/10.1002/aenm.202304062