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Spiro-bifluorene core based hole transporting material with graphene oxide modified CH3NH3PbI3 for inverted planar heterojunction solar cells

  • Jeonbuk National University
  • Swiss Federal Institute of Technology Lausanne
  • Korea Basic Science Institute

Research output: Contribution to journalJournal articlepeer-review

Abstract

Inverted planar heterojunction solar cells (iPHSCs) were fabricated with novel spiro-bifluorene (CF-Sp-BTh) based hole transport material (HTM) and graphene oxide (GO) modified perovskite (CH3NH3PbI3) as sensitizer. CF-Sp-BTh exhibited relatively high hole mobility and favorable HOMO level with respect to the valence band of CH3NH3PbI3. iPHSC using CF-Sp-BTh HTM and GO (0.5 wt%)-CH3NH3PbI3 achieved the power conversion efficiency (PCE) of ∼14.28%, with open circuit voltage (VOC) of ∼1.07 V and a short circuit current density (JSC) of ∼18.82 mA/cm2. The photovoltaic performance of FTO/CF-Sp-BTh/GO (0.5 wt%)-CH3NH3PbI3/PC61BM/Au was higher compared to pristine CH3NH3PbI3 and other GO-CH3NH3PbI3 hybrid based devices. The photoluminescence decay and electrochemical impedance spectra confirmed an enhanced charge separation and retarded charge recombination of GO-CH3NH3PbI3 hybrid based iPHSCs.

Original languageEnglish
Pages (from-to)885-894
Number of pages10
JournalElectrochimica Acta
Volume319
DOIs
StatePublished - 2019.10.1

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 7 - Affordable and Clean Energy
    SDG 7 Affordable and Clean Energy

Keywords

  • Graphene oxide-perovskite hybrid
  • Hole transporting materials
  • Perovskite solar cell
  • Spiro bifluorene based small molecule

Quacquarelli Symonds(QS) Subject Topics

  • Engineering - Chemical
  • Chemistry

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