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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