Improving performance and reducing hysteresis in perovskite solar cells by using F8BT as electron transporting layer

  • Lixiao Zhao
  • , Xueyan Wang
  • , Xiaodong Li
  • , Wenjun Zhang
  • , Xiaohui Liu
  • , Yuejin Zhu
  • , Hai Qiao Wang*
  • , Junfeng Fang
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

32 Scopus citations

Abstract

A conjugated polymer poly (9,9-dioctyfluorene-co-benzothiazole) (F8BT) was used as the electron transporting layer (ETL) to modify the cathode interface of inverted planar perovskite solar cell. Incorporation of the thin F8BT layer delivered greatly enhanced power conversion efficiency (PCE) of 13.9% compared to the PCE 7.9% of the device without F8BT, due to the improvements in various performance parameters like Voc, Jsc and FF. Moreover, great elimination of the hysteresis was demonstrated in F8BT based devices. These results suggest promising potential of polymeric materials in perovskite solar cells and possible approach to eliminate the hysteresis of perovskite solar cells with this class of interfacial materials.

Original languageEnglish
Pages (from-to)79-84
Number of pages6
JournalSolar Energy Materials and Solar Cells
Volume157
DOIs
StatePublished - 1 Dec 2016
Externally publishedYes

Keywords

  • Electron transporting layer
  • F8BT
  • Perovskite solar cell
  • Reduced hysteresis

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