Single-Solution Bar-Coated Halide Perovskite Films via Mediating Crystallization for Scalable Solar Cell Fabrication

Yeonkyeong Ju, So Yeon Park, Kyung Mun Yeom, Jun Hong Noh, Hyun Suk Jung

Research output: Contribution to journalArticlepeer-review

22 Citations (Scopus)


The development of a scalable fabrication technology for halide perovskite solar cells (HPSCs) is an important challenge to realize their commercialization. In particular, continuous solution-coating processes are needed to produce scalable large-area HPSCs. Herein, we report a single-solution bar-coating process that introduces an intermediate phase stage for large-area CH 3 NH 3 PbI 3 films with full coverage and smooth morphology using N-cyclohexyl-2-pyrrolidone (CHP) as a mediator. In contrast to the conventional double-solution coating methods that use antisolvent treatments, the preformed uniform intermediate phase in the single-solution bar-coating process enables the formation of highly uniform perovskite films with a 10 cm × 10 cm area even without antisolvent treatment. The HPSCs fabricated using the resultant single-solution bar-coated perovskite films exhibit superior photovoltaic performance, narrower distribution, and smaller loss with a larger active area than devices fabricated using single-solution spin-coated perovskite films.

Original languageEnglish
Pages (from-to)11537-11544
Number of pages8
JournalACS Applied Materials and Interfaces
Issue number12
Publication statusPublished - 2019 Mar 27

Bibliographical note

Publisher Copyright:
© 2019 American Chemical Society.


  • bar-coating
  • intermediate phase
  • large-area
  • perovskite solar cells
  • single-solution coating process

ASJC Scopus subject areas

  • General Materials Science


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