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

doi:10.1002/adma.201907812

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

Institute of Chemistry

Research output: Contribution to journal › Article › peer-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 language	American English
Article number	1907812
Journal	Advanced Materials
Volume	32
Issue number	12
DOIs	https://doi.org/10.1002/adma.201907812
State	Published - 1 Mar 2020

Bibliographical note

Funding Information:
This work was supported by the Israel Science Foundation (ISF grants 1589/14 and 937/18), Israel Science Foundation–National Science Foundation China (ISF–NSFC) (grant 2556/17), the EU-RISE project 778001 DNASURF, and the Minerva Centre for biohybrid complex systems. D.P. thanks the Etta and Paul Schankerman Chair of Molecular Biomedicine.

Funding Information:
This work was supported by the Israel Science Foundation (ISF grants 1589/14 and 937/18), Israel Science Foundation–National Science Foundation China (ISF–NSFC) (grant 2556/17), the EU‐RISE project 778001 DNASURF, and the Minerva Centre for biohybrid complex systems. D.P. thanks the Etta and Paul Schankerman Chair of Molecular Biomedicine.

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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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.",

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

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