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research article

Hill climbing hysteresis of perovskite-based solar cells: a maximum power point tracking investigation

Pellet, Norman  
•
Giordano, Fabrizio  
•
Dar, M. Ibrahim  
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2017
Progress In Photovoltaics

The surge of the power conversion efficiency of metal halide lead perovskite solar cells comes with concerns, such as the long-term ecotoxicity of lead compounds, their sensitivity toward moisture and oxygen, or the scarcity of some of their components. Most perovskite solar cells still suffer from serious stability problems when measured under real working conditions (maximum power point tracking at 60 degrees C). In the long run, stability will certainly decide on the fate of CH3NH3PbI3 and related lead perovskites for their use in photovoltaic modules. Herein, we show an effective and inexpensive strategy to perform ageing of perovskite solar cells under maximum power point tracking. For the first time, we analyze the issue of power extraction from solar cells exhibiting hysteresis. We show that a standard tracking algorithm such as perturb and observe fails to converge to the maximum power point of the solar cell if it exhibits j(V) hysteresis, and we present an effective strategy to stabilize the algorithm. We show that enforcing oscillations in forward bias can boost the mean power output of some perovskite solar cells by more than 10%, in contrast to a reference crystalline silicon solar cell. Copyright (c) 2017 John Wiley & Sons, Ltd.

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Type
research article
DOI
10.1002/pip.2894
Web of Science ID

WOS:000412571100007

Author(s)
Pellet, Norman  
Giordano, Fabrizio  
Dar, M. Ibrahim  
Gregori, Giuliano
Zakeeruddin, Shaik Mohammed  
Maier, Joachim
Graetzel, Michael  
Date Issued

2017

Publisher

Wiley-Blackwell

Published in
Progress In Photovoltaics
Volume

25

Issue

11

Start page

942

End page

950

Subjects

perovskite

•

maximum power point tracking

•

algorithm

•

stability

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LPI  
Available on Infoscience
November 8, 2017
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/141947
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