Electrical Characterization of Individual Cesium Lead Halide Perovskite Nanowires Using Conductive AFM

Avigail Stern, Sigalit Aharon, Tal Binyamin, Abeer Karmi, Dvir Rotem, Lioz Etgar*, Danny Porath

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

21 Scopus citations

Abstract

Perovskite nanostructures have attracted much attention in recent years due to their suitability for a variety of applications such as photovoltaics, light-emitting diodes (LEDs), nanometer-size lasing, and more. These uses rely on the conductive properties of these nanostructures. However, electrical characterization of individual, thin perovskite nanowires has not yet been reported. Here, conductive atomic force microscopy characterization of individual cesium lead halide nanowires is presented. Clear differences are observed in the conductivity of nanowires containing only bromide and nanowires containing a mixture of bromide and iodide. The differences are attributed to a higher density of crystalline defects, deeper trap states, and higher inherent conductivity for nanowires with mixed bromide–iodide content.

Original languageAmerican English
Article number1907812
JournalAdvanced Materials
Volume32
Issue number12
DOIs
StatePublished - 1 Mar 2020

Bibliographical note

Publisher Copyright:
© 2020 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

Keywords

  • cesium lead halide
  • charge transport
  • conductive properties
  • crystalline defects
  • perovskite nanowires

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