TY  - Journal Article
AU  - Zhu, Jiang
AU  - Koehl, Michael
AU  - Hoffmann, Stephan
AU  - Berger, Karl Anton
AU  - Zamini, Shokufeh
AU  - Bennett, Ian
AU  - Gerritsen, Eric
AU  - Malbranche, Philippe
AU  - Pugliatti, Paola
AU  - Di Stefano, Agnese
AU  - Aleo, Francesco
AU  - Bertani, Dario
AU  - Paletta, Fabrizio
AU  - Roca, Francesco
AU  - Graditi, Giorgio
AU  - Pellegrino, Michele
AU  - Zubillaga, Oihana
AU  - Cano, F.J.
AU  - Pozza, Alberto
AU  - Sample, Tony
AU  - Gottschalg, Ralph
TI  - Changes of solar cell parameters during damp-heat exposure
PY  - 2016
PB  - John Wiley & Sons
AB  - 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. © 2016 The Authors. Progress in Photovoltaics: Research and Applications published by John Wiley & Sons Ltd. © 2016 The Authors. Progress in Photovoltaics: Research and Applications published by John Wiley & Sons Ltd.
SN  - 1062-7995
UR  - http://hdl.handle.net/11556/322
DX  - 10.1002/pip.2793
ER  -