Jump to main content
Jump to site search

Issue 3, 2015
Previous Article Next Article

Cooperative kinetics of depolarization in CH3NH3PbI3 perovskite solar cells

Author affiliations

Abstract

Despite the large photovoltaic performance recently achieved, many aspects of the working principles of hybrid organic–inorganic perovskite solar cells remain to be unveiled. We analyze the experimental features observed in the decay of photovoltage and provide an interpretation of the different depolarization regimes at distinct time scales. We introduce an instantaneous relaxation time that shows the type of relaxation for each separate mechanism. The decay of photovoltage is characterized by electronic events at the ms time scale followed by a power law relaxation in the 10–100 s time window. The latter process is associated with the slow dielectric relaxation of CH3NH3PbI3 perovskite and it points to cooperative kinetics of polarization and depolarization of ferroelectric domains. These findings provide an important tool for interpretation of kinetic features in the perovskite ferroic solar cells.

Graphical abstract: Cooperative kinetics of depolarization in CH3NH3PbI3 perovskite solar cells

Back to tab navigation

Supplementary files

Article information


Submitted
07 Oct 2014
Accepted
14 Jan 2015
First published
14 Jan 2015

Energy Environ. Sci., 2015,8, 910-915
Article type
Communication
Author version available

Cooperative kinetics of depolarization in CH3NH3PbI3 perovskite solar cells

L. Bertoluzzi, R. S. Sanchez, L. Liu, J. Lee, E. Mas-Marza, H. Han, N. Park, I. Mora-Sero and J. Bisquert, Energy Environ. Sci., 2015, 8, 910
DOI: 10.1039/C4EE03171G

Social activity

Search articles by author

Spotlight

Advertisements