Scalable Deposition of High-Efficiency Perovskite Solar Cells by Spray-Coating

Marinus Van Hest, Benjia Dou, Kai Zhu, Sona Ulicna, John Walls, Jake Bowers, Donghoe Kim

Research output: Contribution to journalArticlepeer-review

84 Scopus Citations

Abstract

Spray-deposition is a low-cost, roll-to-roll compatible technique that could potentially replace spin-coating for the deposition of highly efficient perovskite solar cells. Here, perovskite active layers were fabricated in air using an ultrasonic spray system and compared with equivalent spin-coated films. A chlorine-containing perovskite ink with a wide processing window coupled with an antisolvent extraction resulted in perovskite films with relatively rougher surfaces than those spin-coated. A power conversion efficiency (PCE) of 17.3% was achieved with an average of 16.3% from 24 devices. Despite observing differences in film roughness and structure, the performance of sprayed perovskite solar cells was comparable to that of the spin-coated cells processed in an inert atmosphere, showing the versatility of perovskite processing.

Original languageAmerican English
Pages (from-to)1853-1857
Number of pages5
JournalACS Applied Energy Materials
Volume1
Issue number5
DOIs
StatePublished - 2018

Bibliographical note

Publisher Copyright:
© 2018 American Chemical Society.

NREL Publication Number

  • NREL/JA-5K00-75908

Keywords

  • perovskite solar cell
  • scalable atmospheric deposition
  • solution processing
  • ultrasonic spraying
  • wide processing window ink

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