Cost-effective dopant-free star-shaped oligo-aryl amines for high performance perovskite solar cells

  • Jun Ying Feng
  • , Kuan Wen Lai
  • , Yuan Shin Shiue
  • , Ashutosh Singh
  • , C. H.Pavan Kumar
  • , Chun Ting Li
  • , Wen Ti Wu
  • , Jiann T. Lin*
  • , Chih Wei Chu
  • , Chien Cheng Chang
  • , Chao Chin Su
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

40 Citations (Scopus)

Abstract

Cost effective imidazole-based star-shaped oligo(arylamines) were easily prepared in good yields via the reaction of one precursor containing two or more aldehydes with a dione compound having two arylamines. High performance perovskite (MAPbI3) solar cells with a conventional cell configuration were fabricated using these compounds as dopant-free hole transport materials. The best solar-to-electricity conversion efficiency reached ∼17.5%, which surpassed that based on LiTFSI/t-BP doped spiro-OMeTAD. The cell also exhibited much better temporal stability than the standard cell of LiTFSI/t-BP doped spiro-OMeTAD, as no hydrophilic dopants are needed.

Original languageEnglish
Pages (from-to)14209-14221
Number of pages13
JournalJournal of Materials Chemistry A
Volume7
Issue number23
DOIs
Publication statusPublished - 2019
Externally publishedYes

ASJC Scopus subject areas

  • General Chemistry
  • Renewable Energy, Sustainability and the Environment
  • General Materials Science

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