Slot-die coated perovskite films using mixed lead precursors for highly reproducible and large-area solar cells

Donmin Lee, Yen Sook Jung, Youn Jung Heo, Sehyun Lee, Kyeongil Hwang, Ye Jin Jeon, Jueng Eun Kim, Jiyoon Park, Gun Young Jung, Dong Yu Kim

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59 Citations (Scopus)


Recently, many kinds of printing processes have been studied to fabricate perovskite solar cells (PeSCs) for mass production. Among them, slot-die coating is a promising candidate for roll-to-roll processing because of high-throughput, easy module patterning, and a premetered coating system. In this work, we employed mixed lead precursors consisting of PbAc2 and PbCl2 to fabricate PeSCs via slot-die coating. We observed that slot-die-coated perovskite films based on the mixed lead precursors exhibited well-grown and uniform morphology, which was hard to achieve by using only a single lead source. Consequently, PeSCs made with this precursor system showed improved device performance and reproducibility over single PbAc2. Lastly, a large-area module with an active area of 10 cm2 was fabricated with a power conversion efficiency of 8.3%.

Original languageEnglish
Pages (from-to)16133-16139
Number of pages7
JournalACS Applied Materials & Interfaces
Issue number18
Publication statusPublished - 9 May 2018
Externally publishedYes


  • gas-blowing process
  • mixed lead precursors
  • perovskite solar cells
  • scalable printing process
  • slot-die coating

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