Impact of Electrode Materials on Process Environmental Stability of Efficient Perovskite Solar Cells

Jaehoon Chung, Seong Sik Shin, Geunjin Kim, Nam Joong Jeon, Tae Youl Yang, Jun Hong Noh, Jangwon Seo

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

For commercializing perovskite solar cells (PSCs), moisture-tolerant materials are required because a moisture-free environment cannot be maintained on an actual production line (large scale). Recently, PSCs with efficiency exceeding 22% have been fabricated using Li-doped mesoporous TiO2 as an electron transport layer (ETL). However, the use of Li can negatively influence device stability during the fabrication process under humid air because of its hydroscopic property. Here, we report a strategy for improving processing stability without sacrificing the power conversion efficiency (PCE) under a humid atmospheric environment by employing a mesoporous BaSnO3 as an ETL. Using the mesoporous BSO ETL, we achieved a certified efficiency of 21.3% and stabilized efficiency of 21.7%. Furthermore, the BSO-based PSCs also exhibited better processing stability than Li-doped TiO2-based PSCs under humid air. We believe that this strategy of introducing BSO into PSCs will accelerate the commercialization of PSCs.

Original languageEnglish
Pages (from-to)1977-1985
Number of pages9
JournalJoule
Volume3
Issue number8
DOIs
Publication statusPublished - 2019 Aug 21

Keywords

  • BaSnO
  • TiO
  • metal oxides
  • perovskite solar cells
  • stability

ASJC Scopus subject areas

  • Energy(all)

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