Role of Mixed-Cation Perovskites in Hole Conductor-Free Perovskite Solar Cells

Adva Shpatz Dayan, Lioz Etgar*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

In perovskite solar cells, mixed-cation perovskites offer high power conversion efficiencies due to the diverse A+ cations. In these cells, the perovskite is sandwiched between electron-transport and hole-transport layers (HTL). This study presents mono- and mixed-cation perovskites in HTL-free cells: monocation (MAPbI3, FAPbI3) and mixed cation (MA0.8FA0.2PbI3, FA0.8MA0.2PbI3). Surprisingly, monocation perovskites performed better than mixed-cation perovskites in HTL-free cells due to superior hole mobility and p-type behavior, while mixed-cation perovskites work better in n-i-p and p-i-n cells. These findings highlight the electronic differences for various types of perovskite, impacting the commercialization of perovskite solar cells.

Original languageAmerican English
Pages (from-to)11005-11011
Number of pages7
JournalACS Applied Energy Materials
Volume6
Issue number21
DOIs
StatePublished - 13 Nov 2023

Bibliographical note

Publisher Copyright:
© 2023 American Chemical Society.

Keywords

  • charge extraction
  • electron conductor
  • hole conductor
  • hole mobility
  • perovskite

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