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Title: Electrochemical impedance analysis of perovskite–electrolyte interfaces

Here, the flat band potentials and carrier densities of spin coated and sprayed MAPbI 3, FA 0.85Cs 0.15PbI 3, and MAPbBr 3 perovskite films were determined using the Mott-Schottky relation. The films developed a space charge layer and exhibited p-type conduction with carrier concentration ~ 10 16 cm -3 for spin coated films. Electrochemical impedance spectra showed typical space charge impedance at frequencies > 1 kHz with increasing capacitance < 1 kHz owing to an ion diffusion component.
Authors:
ORCiD logo [1] ;  [2] ;  [1] ;  [1] ;  [1]
  1. National Renewable Energy Lab. (NREL), Golden, CO (United States)
  2. Univ. of Colorado, Boulder, CO (United States)
Publication Date:
Report Number(s):
NREL/JA-5900-67853
Journal ID: ISSN 1359-7345; CHCOFS
Grant/Contract Number:
AC36-08GO28308
Type:
Accepted Manuscript
Journal Name:
ChemComm
Additional Journal Information:
Journal Volume: 53; Journal Issue: 16; Journal ID: ISSN 1359-7345
Publisher:
Royal Society of Chemistry
Research Org:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Solar Energy Technologies Office (EE-4S)
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 36 MATERIALS SCIENCE; perovskites; organic-inorganic; solar cells; optoelectronics
OSTI Identifier:
1345114

Li, Zhen, Mercado, Candy C., Yang, Mengjin, Palay, Ethan, and Zhu, Kai. Electrochemical impedance analysis of perovskite–electrolyte interfaces. United States: N. p., Web. doi:10.1039/C6CC10315D.
Li, Zhen, Mercado, Candy C., Yang, Mengjin, Palay, Ethan, & Zhu, Kai. Electrochemical impedance analysis of perovskite–electrolyte interfaces. United States. doi:10.1039/C6CC10315D.
Li, Zhen, Mercado, Candy C., Yang, Mengjin, Palay, Ethan, and Zhu, Kai. 2017. "Electrochemical impedance analysis of perovskite–electrolyte interfaces". United States. doi:10.1039/C6CC10315D. https://www.osti.gov/servlets/purl/1345114.
@article{osti_1345114,
title = {Electrochemical impedance analysis of perovskite–electrolyte interfaces},
author = {Li, Zhen and Mercado, Candy C. and Yang, Mengjin and Palay, Ethan and Zhu, Kai},
abstractNote = {Here, 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 carrier concentration ~ 1016 cm-3 for spin coated films. Electrochemical impedance spectra showed typical space charge impedance at frequencies > 1 kHz with increasing capacitance < 1 kHz owing to an ion diffusion component.},
doi = {10.1039/C6CC10315D},
journal = {ChemComm},
number = 16,
volume = 53,
place = {United States},
year = {2017},
month = {1}
}

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