Dimensional Mixing Increases the Efficiency of 2D/3D Perovskite Solar Cells

Sam Teale, Andrew H. Proppe, Eui Hyuk Jung, Andrew Johnston, Darshan H. Parmar, Bin Chen, Yi Hou, Shana O. Kelley, Edward H. Sargent*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

2D/3D heterojunction perovskite solar cells have demonstrated superior efficiency and stability compared to their fully 3D counterparts. Previous studies have focused on producing 2D layers containing predominantly n = 1 perovskite quantum wells. In this report we demonstrate a technique to introduce dimensional mixing into the 2D layer, and we show that this leads to more efficient devices relative to controls. Simulations suggest that the improvements are due to a reduction in trap state density and superior band alignment between the 3D/2D perovskite and the hole-transporting layer.

Original languageEnglish (US)
Pages (from-to)5115-5119
Number of pages5
JournalJournal of Physical Chemistry Letters
Volume11
Issue number13
DOIs
StatePublished - Jul 2 2020
Externally publishedYes

ASJC Scopus subject areas

  • Materials Science(all)
  • Physical and Theoretical Chemistry

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