Effect of antisolvent treatment on PbI2 films for high performance carbon-based perovskite solar cells

Tingting Xu, Kai Zou, Xuelin Sun, Zhi Wan, Hebing Tang, Yingxiang Zhang, Lixin Chen, Qiquan Qiao, Wei Huang

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

In two-step sequential deposition to prepare perovskite film, morphology of PbI2 film plays a crucial effect on the as-prepared perovskite CH3NH3PbI3 film. In this work, PbI2 films are treated by antisolvents of diethyl ether (DE) and chlorobenzene (CB) respectively to adjust the perovskite CH3NH3PbI3 formation. It is found that the DE treated corresponding perovskite film has smoother surface morphology and enhanced carrier transport property compared with the pristine perovskite film and the film treated by the CB. In a carbon based hole transport material (HTM)-free solar cell configuration, perovskite solar cell (PSC) assembled by the DE treated perovskite achieves the champion power conversion efficiency (PCE) of 11.91%, which is the highest compared with the pristine PSC of 9.07% and the CB treated PSC of 10.87%.

Original languageEnglish (US)
Article number128157
JournalMaterials Letters
Volume275
DOIs
StatePublished - Sep 15 2020

Keywords

  • Antisolvent treatment
  • Carbon-based perovskite solar cell
  • Energy storage and conversion
  • Solar energy materials
  • Two-step deposition

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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