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

22 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

NREL Publication Number

  • NREL/JA-5900-64922

Keywords

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

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