Triphenylamine-based organic small-molecule interlayer materials for inverted perovskite solar cells

Doyranli C., CHOI F. P., Alishah H. M., KOYUNCU S., GÜNEŞ S., SAN N.

ORGANIC ELECTRONICS, vol.108, 2022 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 108
  • Publication Date: 2022
  • Doi Number: 10.1016/j.orgel.2022.106595
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Chemical Abstracts Core, Compendex, INSPEC
  • Keywords: Hole transport layer, Inverted perovskite solar cells, Interlayer materials, Donor-acceptor-donor type organic small, molecules, HOLE-TRANSPORTING MATERIALS, SURFACE MODIFICATION, INTERFACIAL LAYER, LOW-COST, OXIDE, PERFORMANCE, EFFICIENT, DEFECT, AIR
  • Yıldız Technical University Affiliated: Yes


In this report, two novel donor-acceptor-donor type triphenylamine-quinoxaline-based (QC-TPA and QC-TPAOMe) small organic molecules have been synthesized by the Suzuki coupling reaction as hole transport materials (HTMs) and successfully utilized in the NiOx/perovskite interface. All device fabrication steps with ITO/NiOx/QC-TPA or QC-TPAOMe/CH3NH3PbI3/PCBM/BCP/Ag configurations were performed in ambient air over 55% relative humidity, except for thermal evaporation of metal contacts. Modifications of the NiOx/ perovskite interface with QC-TPA and QC-TPAOMe molecules can improve FF and JSC by enhancing hole extraction and reducing energy losses. Consequently, the power conversion efficiency (PCE) boosted from 10.03% to 14.46% and 13.21% with surface modifications of NiOx with QC-TPA and QC-TPAOMe, respectively.