Format

Send to

Choose Destination
J Phys Chem Lett. 2014 May 1;5(9):1511-5. doi: 10.1021/jz500113x. Epub 2014 Apr 10.

Anomalous Hysteresis in Perovskite Solar Cells.

Author information

1
Department of Physics, University of Oxford, Clarendon Laboratory, Parks Road, Oxford OX1 3PU, United Kingdom.

Abstract

Perovskite solar cells have rapidly risen to the forefront of emerging photovoltaic technologies, exhibiting rapidly rising efficiencies. This is likely to continue to rise, but in the development of these solar cells there are unusual characteristics that have arisen, specifically an anomalous hysteresis in the current-voltage curves. We identify this phenomenon and show some examples of factors that make the hysteresis more or less extreme. We also demonstrate stabilized power output under working conditions and suggest that this is a useful parameter to present, alongside the current-voltage scan derived power conversion efficiency. We hypothesize three possible origins of the effect and discuss its implications on device efficiency and future research directions. Understanding and resolving the hysteresis is essential for further progress and is likely to lead to a further step improvement in performance.

KEYWORDS:

current−voltage curves; hysteresis; perovskite; photovoltaics; solar cell; stability

PMID:
26270088
DOI:
10.1021/jz500113x

Supplemental Content

Full text links

Icon for American Chemical Society
Loading ...
Support Center