Highly flexible, high-performance perovskite solar cells with adhesion promoted AuCl3-doped graphene electrodes

Jin Hyuck Heo, Dong Hee Shin, Min Hyeok Jang, Myung Lae Lee, Man Gu Kang, Sang Hyuk Im

Research output: Contribution to journalArticlepeer-review

51 Citations (Scopus)


Super flexible TCO-free FAPbI3-xBrx planar type inverted perovskite solar cells with a 17.9% power conversion efficiency under 1 sun conditions were demonstrated by introducing an APTES (3-aminopropyl triethoxysilane) adhesion promoter between a PET flexible substrate and a AuCl3-doped single-layer graphene transparent electrode (TCE). Due to the formation of covalent bonds by the APTES inter-layer, the AuCl3-GR/APTES/PET substrate had excellent flexibility, whereas the AuCl3-GR/PET substrate and the ITO/PET substrate had significant degradation of the sheet resistance after a bending test due to the break-off or delamination of AuCl3-GR from the PET substrate and the cracking of ITO. Accordingly, the perovskite solar cells constructed on the AuCl3-GR/APTES/PET TCE substrate exhibited excellent bending stability and they maintained their PCE at over 90% of the initial value after 100 bending cycles at R ≥ 4 mm.

Original languageEnglish
Pages (from-to)21146-21152
Number of pages7
JournalJournal of Materials Chemistry A
Issue number40
Publication statusPublished - 2017

ASJC Scopus subject areas

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


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