Quantum Dots Supply Bulk- and Surface-Passivation Agents for Efficient and Stable Perovskite Solar Cells

Xiaopeng Zheng, Joel Troughton, Nicola Gasparini, Yuanbao Lin, Mingyang Wei, Yi Hou, Jiakai Liu, Kepeng Song, Zhaolai Chen, Chen Yang, Bekir Turedi, Abdullah Y. Alsalloum, Jun Pan, Jie Chen, Ayan A. Zhumekenov, Thomas D. Anthopoulos, Yu Han, Derya Baran, Omar F. Mohammed, Edward H. SargentOsman M. Bakr*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

221 Scopus citations

Abstract

We report a facile processing strategy that utilizes perovskite quantum dots (QDs) to distribute elemental dopants uniformly across a MAPbI3 film and anchor ligands to the film's surface—reducing the film's trap-state density and rendering its surface hydrophobic. QD-treated MAPbI3 films yield solar cells with 21.5% power conversion efficiency (PCE) (versus 18.3% for non-QD-treated) and maintain 80% of their initial PCE under 1-sun continuous illumination for 500 h with improved thermal stability.

Original languageEnglish (US)
Pages (from-to)1963-1976
Number of pages14
JournalJoule
Volume3
Issue number8
DOIs
StatePublished - Aug 21 2019

Keywords

  • doping
  • nanocrystals
  • perovskite solar cells
  • quantum dots
  • self-assembled monolayer
  • stability
  • surface modification

ASJC Scopus subject areas

  • General Energy

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