Correlation of Spatiotemporal Dynamics of Polarization and Charge Transport in Blended Hybrid Organic-Inorganic Perovskites on Macro- And Nanoscales

Liam Collins, Eric S. Muckley, Hsinhan Tsai, Dibyajyoti Ghosh, Amanda J. Neukirch, Sergei Tretiak, Sergei V. Kalinin, Wanyi Nie, Ilia N. Ivanov

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

Progress in flexible organic electronics necessitates a full understanding of how local inhomogeneities impact electronic and ionic conduction pathways and underlie macroscopic device characteristics. We used frequency- and time-resolved macro- and nanoprobe measurements to study spatiotemporal characteristics of multiscale charge transport dynamics in a series of ternary-blended hybrid organic inorganic perovskites (HOIPs) (MA0.95-xFAxCs0.05PbI3). We show that A-site cation composition defines charge transport mechanisms across broad temporal (102-10-6 s) and spatial (millimeters-picometers) scales. Ab initio molecular dynamic simulations suggest that insertion of FA results in a dynamic lattice, improved ion transport, and dipole screening. We demonstrate that correlations between macro- and nanoscale measurements provide a pathway for accessing distribution of relaxation in nanoscale polarization and charge transport dynamics of ionically conductive functional perovskites.

Original languageEnglish
Pages (from-to)15380-15388
Number of pages9
JournalACS Applied Materials and Interfaces
Volume12
Issue number13
DOIs
Publication statusPublished - 1 Apr 2020
Externally publishedYes

Keywords

  • hybrid organic-inorganic perovskites (HOIP)
  • impedance spectroscopy (IS)
  • ion transport
  • macroscale
  • nanoscale
  • time-resolved Kelvin probe force microscopy (tr-KPFM)

Fingerprint

Dive into the research topics of 'Correlation of Spatiotemporal Dynamics of Polarization and Charge Transport in Blended Hybrid Organic-Inorganic Perovskites on Macro- And Nanoscales'. Together they form a unique fingerprint.

Cite this