High-performing laminated perovskite solar cells by surface engineering of perovskite films

Oh Yeong Gong, Min Kyeong Seo, Jin Hyuk Choi, So Yeon Kim, Dong Hoe Kim, In Sun Cho, Nam Gyu Park, Gill Sang Han, Hyun Suk Jung

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

Stacked perovskite films—laminated films in particular—have garnered considerable attention owing to their excellent potential for various applications. However, perovskite solar cells fabricated using laminated perovskite films exhibit a critically low power conversion efficiency. To overcome this limitation, in this paper, we report the surface and grain boundary engineering of perovskite films via transfer printing using the hot-pressing process to attain high-performing laminated perovskite solar cells. Perovskite films whose surface and grain boundaries were selectively dissolved by acetonitrile exhibited suppressed formation of defects at the lamination interface, and uniform plastic deformation was induced in the films during the hot-pressing process. Consequently, high efficiency of 22.52% and high intrinsic stability, namely the retention of an average of 96% of the initial efficiency after 2000 h, were achieved.

Original languageEnglish
Article number153148
JournalApplied Surface Science
Volume591
DOIs
Publication statusPublished - 2022 Jul 30

Keywords

  • Hot-pressing
  • Laminated perovskite solar cells
  • Lamination of perovskite film
  • Surface engineering
  • Transfer printing

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Physics and Astronomy(all)
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

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