IV-Measurements of Bifacial Solar Cells in an Inline Solar Simulator with Double-Sided Illumination
| Autor: | Krieg, A., Greulich, J.M., Ramspeck, K., Dzafic, D., Wöhrle, N., Rauer, M., Rein, S. |
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| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: | |
| DOI: | 10.4229/35theupvsec20182018-2dv.3.38 |
| Popis: | 35th European Photovoltaic Solar Energy Conference and Exhibition; 761-765 Bifacial solar cells allow higher output power densities due to double-sided power generation compared to monofacial cells. An important step is the accurate measurement of the current-voltage (IV) characteristics of the cells under realistic conditions. The most accurate option to measure a bifacial solar cell is to illuminate the cells simultaneously from both sides. A new method for irradiance and short-circuit current correction for bifacial solar cells suitable for inline measurements in mass production is presented, where the crosstalk during a single-sided measurement and deviations of the ratio of the nominal to the measured irradiance at double-sided illumination measurements will be corrected by taking the bifaciality coefficient into account. This reduces typical measurement errors for the short-circuit current Isc below 0.1%. The simple approach, adding the front and the rear side irradiance directly to calculate the bifacial irradiance, shows Isc errors of more than 0.5% in typical measuring conditions and should not be used when the solar cell is double-sided illuminated. |
| Databáze: | OpenAIRE |
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