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Intercomparison campaign of spectroradiometers for a correct estimation of solar spectral irradiance: results and potential impact on photovoltaic devices calibration
Author(s) -
Galleano Roberto,
Zaaiman Willem,
Virtuani Alessandro,
Pavanello Diego,
Morabito Paolo,
Minuto Alessandro,
Spena Angelo,
Bartocci Simona,
Fucci Raffaele,
Leanza Gianni,
Fasanaro Daniela,
Catena Mario
Publication year - 2014
Publication title -
progress in photovoltaics: research and applications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.286
H-Index - 131
eISSN - 1099-159X
pISSN - 1062-7995
DOI - 10.1002/pip.2361
Subject(s) - spectroradiometer , irradiance , photovoltaic system , calibration , remote sensing , photovoltaics , environmental science , solar irradiance , pyranometer , radiation , optics , computer science , meteorology , physics , mathematics , electrical engineering , engineering , geography , statistics , reflectivity
This paper describes the results of an intercomparison of spectroradiometers for global and direct normal incidence irradiance in the visible and near‐infrared spectral regions together with an assessment of the impact these results may have on the estimation of the short‐circuit current ( I SC ) calibration of photovoltaic devices and on the spectral mismatch calculation. The intercomparison was conducted in the framework of the European project Apollon with the additional participation of external partners from the Italian project for the long‐term monitoring of solar radiation for photovoltaics. Six institutions and six spectroradiometer systems, representing different technologies and manufacturers, were involved. Prior to the intercomparison, all participating partners calibrated their own instrument(s) according to their usual procedures in order to verify the entire measuring and traceability chain. The difference in measured spectra shape and amplitude showed to have an impact on I SC calculation of less than 3% and less than 6% for single‐junction and multi‐junction devices, respectively. When only the shape of the spectra is considered, the spectral mismatch ranges from 1.7% to 4.7% depending on the spectral response of the device. Copyright © 2013 John Wiley & Sons, Ltd.