Perovskite Solar Cells Employing Dopant-Free Organic Hole Transport Materials with Tunable Energy Levels

  • Yang Yang
  • , Yongsheng Liu
  • , Ziruo Hong*
  • , Qi Chen
  • , Huajun Chen
  • , Wei Hsuan Chang
  • , Tze Bin Song
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

263 Citations (Scopus)

Abstract

Conjugated small-molecule hole-transport materials (HTMs) with tunable energy levels are designed and synthesized for efficient perovskite solar cells. A champion device with efficiency of 16.2% is demonstrated using a dopant-free DERDTS-TBDT HTM, while the DORDTS-DFBT-HTM-based device shows an inferior performance of 6.2% due to its low hole mobility and unmatched HOMO level with the valence band of perovskite film.

Original languageEnglish
Pages (from-to)440-446
Number of pages7
JournalAdvanced Materials
Volume28
Issue number3
DOIs
Publication statusPublished - 20 Jan 2016
Externally publishedYes

Keywords

  • charge transport
  • dopant-free small molecules
  • hole conductors
  • perovskite
  • solar cells

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