Perovskite Solar Cell Using a Two-Dimensional Titania Nanosheet Thin Film as the Compact Layer

  • Zhen Li
  • , Can Li
  • , Yahui Li
  • , Yujin Xing
  • , Zelin Zhang
  • , Xianfeng Zhang
  • , Yantao Shi
  • , Tingli Ma
  • , Renzhi Ma
  • , Kunlin Wang
  • , Jinquan Wei

Research output: Contribution to journalArticlepeer-review

23 Scopus Citations

Abstract

The compact layer plays an important role in conducting electrons and blocking holes in perovskite solar cells (PSCs). Here, we use a two-dimensional titania nanosheet (TNS) thin film as the compact layer in CH3NH3PbI3 PSCs. TNS thin films with thicknesses ranging from 8 to 75 nm were prepared by an electrophoretic deposition method from a dilute TNS/tetrabutylammonium hydroxide solution. The TNS thin films contact the fluorine-doped tin oxide grains perfectly. Our results show that a 8-nm-thick TNS film is sufficient for acting as the compact layer. Currently, the PSC with a TNS compact layer has a high efficiency of 10.7% and relatively low hysteresis behavior.
Original languageAmerican English
Pages (from-to)15117-15122
Number of pages6
JournalACS Applied Materials and Interfaces
Volume7
Issue number28
DOIs
StatePublished - 2015

NLR Publication Number

  • NREL/JA-5900-64922

Keywords

  • compact layer
  • electrophoretic deposition
  • perovskite solar cell
  • titania nanosheet

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