Microseconds, milliseconds and seconds: deconvoluting the dynamic behaviour of planar perovskite solar cells

Adam Pockett; Giles E Eperon; Nobuya Sakai; Henry J Snaith; Laurence M Peter; Petra J Cameron

doi:10.1039/c6cp08424a

Microseconds, milliseconds and seconds: deconvoluting the dynamic behaviour of planar perovskite solar cells

Phys Chem Chem Phys. 2017 Feb 22;19(8):5959-5970. doi: 10.1039/c6cp08424a.

Authors

Adam Pockett¹, Giles E Eperon², Nobuya Sakai³, Henry J Snaith³, Laurence M Peter¹, Petra J Cameron¹

Affiliations

¹ Department of Chemistry, University of Bath, Bath, BA2 7AY, UK. l.m.peter@bath.ac.uk p.j.cameron@bath.ac.uk.
² Department of Physics, Clarendon Laboratory, University of Oxford, Oxford, OX1 3PU, UK and Department of Chemistry, University of Washington, Seattle, WA 98195, USA.
³ Department of Physics, Clarendon Laboratory, University of Oxford, Oxford, OX1 3PU, UK.

PMID: 28177002
DOI: 10.1039/c6cp08424a

Abstract

Perovskite solar cells (PSC) are shown to behave as coupled ionic-electronic conductors with strong evidence that the ionic environment moderates both the rate of electron-hole recombination and the band offsets in planar PSC. Numerous models have been presented to explain the behaviour of perovskite solar cells, but to date no single model has emerged that can explain both the frequency and time dependent response of the devices. Here we present a straightforward coupled ionic-electronic model that can be used to explain the large amplitude transient behaviour and the impedance response of PSC.