Self-Doping a Hole-Transporting Layer Based on a Conjugated Polyelectrolyte Enables Efficient and Stable Inverted Perovskite Solar Cells

  • Shuang Li
  • , Li Wan
  • , Lijun Chen
  • , Changbo Deng
  • , Lupiao Tao
  • , Zhanpeng Lu
  • , Wenjun Zhang*
  • , Junfeng Fang*
  • , Weijie Song
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

The interface material is an indispensable part of perovskite solar cells (PSCs) because of its special functions. In this work, a conjugated polyelectrolyte, PTPADT-SO3Na, was synthesized and introduced to the inverted PSCs as a hole-transporting layer (HTL). PTPADT-SO3Na exhibits a close level of valence band to perovskites and good conductivity because of a self-doping effect. Accordingly, the PTPADT-SO3Na device shows excellent performances with a maximum efficiency of 18.15%, which is better than that of the device with a typical HTL [poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate)]. Meanwhile, the PTPADT-SO3Na PSC exhibits outstanding stability in an ambient atmosphere (humidity of 50%) and heating condition (85 °C).

Original languageEnglish
Pages (from-to)11724-11731
Number of pages8
JournalACS Applied Energy Materials
Volume3
Issue number12
DOIs
StatePublished - 28 Dec 2020
Externally publishedYes

Keywords

  • High performance
  • Interface
  • Inverted perovskite solar cell
  • P-type conjugated polymer
  • Self-doping effect

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