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

23 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

  • Chemistry(all)
  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)

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