Revolutionary Two-Step Process Boosts Perovskite Solar Cell Efficiency

May 14, 2024 09:16 AM ET
  • Revolutionary two-step evaporation and inkjet process for perovskite solar cells achieves high efficiency and scalability, paving the way for future advancements in solar technology.
Revolutionary Two-Step Process Boosts Perovskite Solar Cell Efficiency

Researchers from Germany's Karlsruhe Institute of Technology (KIT) have developed a scalable two-step evaporation and inkjet process for perovskite thin-film solar cells, achieving champion cells with the same efficiencies as those made with the spin coating process. The technique combines an evaporated lead iodide layer with inkjet-printed organic perovskite precursor materials, providing high reproducibility and potential for conformal growth on textured silicon.

The team used a Pixdro LP50 inkjet printer with a Sapphire QS-256/10 AAA print head, which has 16 times more nozzles than typical print heads, to deposit the films. By optimizing printing parameters, they achieved champion devices with an efficiency of 18.2%, on par with spin-coated counterparts. The scientists will now focus on integrating the process into the fabrication of tandem and large area devices.

How did German researchers achieve high-efficiency perovskite solar cells?

  • The researchers from KIT developed a scalable two-step evaporation and inkjet process for perovskite thin-film solar cells.
  • The technique combines an evaporated lead iodide layer with inkjet-printed organic perovskite precursor materials.
  • The team used a Pixdro LP50 inkjet printer with a Sapphire QS-256/10 AAA print head, which has 16 times more nozzles than typical print heads.
  • By optimizing printing parameters, they achieved champion devices with an efficiency of 18.2%, on par with spin-coated counterparts.
  • The process provides high reproducibility and potential for conformal growth on textured silicon.
  • The scientists will now focus on integrating the process into the fabrication of tandem and large area devices.



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