Efficient Planar Perovskite Solar Cells with Reduced Hysteresis and Enhanced Open Circuit Voltage by Using PW12-TiO2as Electron Transport Layer

Chun Huang, Canjun Liu, Yunxiang Di, Wenzhang Li, Fangyang Liu, Liangxing Jiang, Jie Li, Xiaojing Hao, Haitao Huang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

33 Citations (Scopus)

Abstract

An electron transport layer is essential for effective operation of planar perovskite solar cells. In this Article, PW12-TiO2composite was used as the electron transport layer for the planar perovskite solar cell in the device structure of fluorine-doped tin oxide (FTO)-glass/PW12-TiO2/perovskite/spiro-OMeTAD/Au. A proper downward shift of the conduction band minimum (CBM) enhanced electron extraction from the perovskite layer to the PW12-TiO2composite layer. Consequently, the common hysteresis effect in TiO2-based planar perovskite solar cells was significantly reduced and the open circuit voltage was greatly increased to about 1.1 V. Perovskite solar cells using the PW12-TiO2compact layer showed an efficiency of 15.45%. This work can contribute to the studies on the electron transport layer and interface engineering for the further development of perovskite solar cells.
Original languageEnglish
Pages (from-to)8520-8526
Number of pages7
JournalACS Applied Materials and Interfaces
Volume8
Issue number13
DOIs
Publication statusPublished - 20 Apr 2016

Keywords

  • composite
  • electron extraction
  • electron transport layer
  • interface
  • planar perovskite solar cells

ASJC Scopus subject areas

  • Materials Science(all)

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