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Highly efficient and stable planar perovskite solar cells with reduced graphene oxide nanosheets as electrode interlayer

  • Jun Seok Yeo
  • , Rira Kang
  • , Sehyun Lee
  • , Ye Jin Jeon
  • , No Soung Myoung
  • , Chang Lyoul Lee
  • , Dong Yu Kim*
  • , Jin Mun Yun
  • , You Hyun Seo
  • , Seok Soon Kim
  • , Seok In Na
  • *Corresponding author for this work

Research output: Contribution to journalJournal articlepeer-review

Abstract

We demonstrate a simple solution and room-temperature processed reduced graphene oxide (RGO) as a novel hole-transporting material (HTM) to guarantee highly efficient and highly stable CH3NH3PbI3 perovskite solar cells (PeSCs). The effects of RGO HTM are systemically investigated in terms of PeSC efficiency, PeSC stability, morphology of perovskite film, recombination dynamics, and charge-transport through CH3NH3PbI3/HTM interface. The resultant PeSC with a planar configuration of glass/ITO/RGO/CH3NH3PbI3/PC61BM/bathocuproine (BCP)/Ag exhibits improved device efficiency (maximum PCE of 10.8%) with high reproducibility than those of the reference devices using conventional PEDOT:PSS and GO HTMs. Also, the RGO-based PeSCs show highly desirable device stability in comparison to the PEDOT:PSS PeSCs.

Original languageEnglish
Pages (from-to)96-104
Number of pages9
JournalNano Energy
Volume12
DOIs
StatePublished - 2015.03.1

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

  • Interlayers
  • Perovskite solar cells
  • Planar structures
  • Reduced graphene oxides

Quacquarelli Symonds(QS) Subject Topics

  • Materials Science
  • Engineering - Electrical & Electronic
  • Engineering - Petroleum

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