Title: Changes of Solar Cell Parameters During Damp-Heat Exposure
Authors: ZHU JiangKOEHL MichaelHOFFMANN StephanBERGER Karl AntonZAMINI ShokufehBENNETT IanGERRITSEN EricMALBRANCHE PhilippePUGLIATTI PaolaDI STEFANO AgneseALEO FrancescoBERTANI DarioPALETTA FabrizioROCA FrancescoGRADITI GiorgioPELLEGRINO MicheleZUBILLAGA OihanaCANO IRANZO F. J.POZZA ALBERTOSAMPLE TonyGOTTSCHALG Ralph
Citation: PROGRESS IN PHOTOVOLTAICS vol. 24 no. 10 p. 1346-1358
Publisher: WILEY-BLACKWELL
Publication Year: 2016
JRC N°: JRC98093
ISSN: 1062-7995
URI: http://onlinelibrary.wiley.com/doi/10.1002/pip.2793/full
http://publications.jrc.ec.europa.eu/repository/handle/JRC98093
DOI: 10.1002/pip.2793
Type: Articles in periodicals and books
Abstract: The electrical ageing of PV 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 life-time prediction of devices. The derived humidity dose is used to characterize 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.
JRC Directorate:Energy, Transport and Climate

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