Title: Second international spectroradiometer intercomparison : preliminary results and impact on PV devices calibration.
Authors: GALLEANO RobertoZAAIMAN WillemSTRATI CeciliaBARTOCCI SimonaPRAVETTONI MauroMARZOLI MatteoFUCCI RaffaeleLEANZA GianniTIMÒ GianlucaMINUTO AlessandroCATENA MarioALEO FrancescoTAKAGI SAKIYAMA ANÚÑEZ RubénBELLUARDO Giorgio
Citation: 28th European Photovoltaic Solar Energy Conference and Exhibition p. 3460 - 3465
Publisher: WIP Wirtschaft und Infrastruktur GmbH & Co Planungs KG
Publication Year: 2013
JRC N°: JRC80663
ISBN: 3-936338-33-7
URI: http://www.eupvsec-proceedings.com/proceedings?paper=21306
http://publications.jrc.ec.europa.eu/repository/handle/JRC80663
DOI: 10.4229/28thEUPVSEC2013-4AV.6.33
Type: Articles in periodicals and books
Abstract: The large variety of photovoltaic (PV) technologies today available on the market makes the measurement of the spectral content of the incoming sun light a key parameter for the characterization, calibration, and energy yield estimation of these devices. Nowadays spectroradiometers of different types (e.g. single-, double- stage rotating grating monochromator or fixed single grating polychromator with photodiode (PD) array or CCD detectors) are routinely used for solar spectrum measurements. So far, however, in the PV community little attention has been paid to the evaluation of spectroradiometers and relevant measurement procedures to make solar spectrum measurements comparable and directly traceable to SI units. In the framework of the European project "Apollon" and of an Italian project for the monitoring of the solar direct irradiance throughout the country, a group of European research institutes active in the PV research field, together with an industrial partner, set up the second intercomparison of spectroradiometers for solar spectrum measurements. Aims of the intercomparison were: exchange and compare instrument calibration procedures, measurement capabilities, establish equivalence figures for solar spectra measurement and put in practice lessons learnt from the previous one. This paper describes the intercomparison campaign, reports on the results and analyzes practical consequences that the differences in measured spectra may have on multi-junction PV device calibration.
JRC Directorate:Energy, Transport and Climate

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