Morphology control of planar heterojunction perovskite solar cells with fluorinated PDI films as organic electron transport layer

Jiachi Huang, Zhuowei Gu, Lijian Zuo, Tao Ye, Hongzheng Chen

Research output: Contribution to journalArticlepeer-review

52 Scopus citations

Abstract

Morphology control is critical to achieve high efficiency CH3NH3PbI3 perovskite solar cells (PSC). In this paper, fluorinated perylene diimide (FPDI) was used as novel organic electron transport material in planar heterojunction perovskite solar cells. The perovskite film was fabricated by sequential vacuum vapor deposition, and the film morphology could be controlled by optimizing the FPDI film morphology with short time solvent spin-coating or solvent vapor annealing (SVA). Dense and uniform perovskite film with high substrate coverage could be obtained when the FPDI film was treated by chloroform SVA for half an hour, and the fill factor (FF) of the perovskite solar cell increased from 30.44% to 55.20%, enhancing the power conversion efficiency (PCE) from 3.23% to 7.44%. The PCE of the best device reached 7.93%, which was comparable to that (8.25%) of the conventional ZnO electron transport layer based perovskite device prepared by the same method.

Original languageEnglish
Pages (from-to)331-338
Number of pages8
JournalSolar Energy
Volume133
DOIs
StatePublished - 1 Aug 2016
Externally publishedYes

Keywords

  • Electron transport layer
  • Fluorinated PDI
  • Morphology control
  • Perovskite solar cells

Fingerprint

Dive into the research topics of 'Morphology control of planar heterojunction perovskite solar cells with fluorinated PDI films as organic electron transport layer'. Together they form a unique fingerprint.

Cite this