Electrochemical Impedance Analysis of Perovskite-Electrolyte Interfaces

Zhen Li, Mengjin Yang, Kai Zhu, Candy Mercado, Ethan Palay

Research output: Contribution to journalArticlepeer-review

43 Scopus Citations

Abstract

The flat band potentials and carrier densities of spin coated and sprayed MAPbI3, FA0.85Cs0.15PbI3, and MAPbBr3 perovskite films were determined using the Mott-Schottky relation. The films developed a space charge layer and exhibited p-type conduction with a carrier concentration of ∼1016 cm−3 for spin coated films. Electrochemical impedance spectra showed typical space charge impedance at frequencies >1 kHz, and an exceptional high capacitance at frequency <1 kHz owing to an ion diffusion component.

Original languageAmerican English
Pages (from-to)2467-2470
Number of pages4
JournalChemical Communications
Volume53
Issue number16
DOIs
StatePublished - 2017

Bibliographical note

Publisher Copyright:
© The Royal Society of Chemistry.

NREL Publication Number

  • NREL/JA-5900-67853

Keywords

  • optoelectronics
  • organic-inorganic
  • perovskites
  • solar cells

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