Title: Spectral Mismatch in Calibration of Photovoltaic Reference Devices by Global Sunlight Method
Authors: MUELLEJANS HARALDIOANNIDES AndreasKENNY ROBERTZAAIMAN WILLEMOSSENBRINK HEINZDUNLOP EWAN
Citation: MEASUREMENT SCIENCE & TECHNOLOGY vol. 16 p. 1250-1254
Publisher: IOP PUBLISHING LTD
Publication Year: 2005
JRC Publication N°: JRC31731
URI: http://publications.jrc.ec.europa.eu/repository/handle/JRC31731
Type: Articles in Journals
Abstract: The calibration of PV reference devices by the global sunlight method is supposed to have high repeatability even if the spectral irradiance is not measured. Here we investigate seasonal variation of this method by calculating the spectral mismatch for crystalline Silicon reference solar cells for spectra measured at AM=1.5. A seasonal variation is found with negligible mismatch for certain periods but significant deviations for other periods. Based on this a modified global sunlight method using global natural sunlight for the calibration of reference PV devices is proposed, using measured spectral irradiance and applying mismatch correction.
JRC Institute:Institute for Environment and Sustainability

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