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Changes of solar cell parameters during damp-heat exposure

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posted on 11.08.2016 by Jiang Zhu, M. Koehl, S. Hoffmann, K.A. Berger, Shokufeh Zamini, I.J. Bennett, E. Gerritsen, P. Malbranche, P. Pugliatti, A. Di Stefano, F. Aleo, D. Bertani, F. Paletta, F. Roca, G. Graditi, M. Pellegrino, O. Zubillaga, F.J. Cano Iranzo, A. Pozza, T. Sample, Ralph Gottschalg
The electrical ageing of photovoltaic modules during extended damp-heat tests at different stress levels is investigated for three types of crystalline silicon photovoltaic modules with different backsheets, encapsulants and cell types. Deploying different stress levels allows determination of an equivalent stress dose function, which is a first step towards a lifetime prediction of devices. The derived humidity dose is used to characterise the degradation of power as well as that of the solar cell's equivalent circuit parameters calculated from measured current–voltage characteristics. An application of this to the samples demonstrates different modes in the degradation and thus enables better understanding of the module's underlying ageing mechanisms. The analysis of changes in the solar cell equivalent circuit parameters identified the primary contributors to the power degradation and distinguished the potential ageing mechanism for each types of module investigated in this paper.

Funding

This work was supported in part by the European Commission under FP7 grant N° 262533 SOPHIA (INFRA-2010-1.1.22_CP-CSA-Infra) and by the Research Councils UK(RCUK) under project ‘Stability and Performance of Photovoltaics (STAPP)’ (contract no: EP/H040331/1).

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Published in

Progress in Photovoltaics: research and applications

Pages

? - ? (13)

Citation

ZHU, J. ... et al., 2016. Changes of solar cell parameters during damp-heat exposure. Progress in Photovoltaics: research and applications, 24 (10), pp. 1346-1358.

Publisher

© The Authors. Published by John Wiley & Sons Ltd.

Version

VoR (Version of Record)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution 4.0 International (CC BY 4.0) licence. Full details of this licence are available at: http://creativecommons.org/licenses/ by/4.0/

Acceptance date

17/05/2016

Publication date

2016-06-22

Notes

This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution andreproduction in any medium, provided the original work is properly cited.

ISSN

1099-159X

Language

en

Licence

Exports