Bifacial PERC+ Solar Cells and Modules: An Overview
| Autor: | Dullweber, T., Schulte-Huxel, H., Kranz, C., Blankemeyer, S., Baumann, U., Witteck, R., Peibst, R., Köntges, M., Brendel, R., Yao, Y. |
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| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: | |
| DOI: | 10.4229/eupvsec20172017-2av.2.20 |
| Popis: | 33rd European Photovoltaic Solar Energy Conference and Exhibition; 649-656 Since its first publication in 2015, the PERC+ cell concept has been rapidly adopted by several solar cell manufacturers worldwide. The fast industrial implementation is facilitated by the very similar process technology of bifacial PERC+ cells and main stream monofacial PERC cells. Conversion efficiencies of industrial PERC+ solar cells up to 21.6% with front side illumination and 17.3% with rear side illumination were reported. Meanwhile, four companies are offering commercial bifacial PERC+ modules with maximum rating power around 300 Wp when illuminated from the front side, only. These modules apply 60 PERC+ cells with 4 or 5 busbars, which are interconnected by conventional stringing and tabbing technology. First small scale outdoor installations verify an increase of the energy yield relative to monofacial PERC modules between 13% and 22%. Two large scale out door installations with 2 MWp and 20 MWp are under construction in Taiwan and China, respectively. We report for the first time in detail on a novel bifacial PERC+ prototype module by applying the Smart Wire Connection Technology. We interconnect 18 halved PERC+ solar cells by soldering 18 wires directly to the Ag front and Al rear fingers. The resulting prototype module exhibits independently confirmed front and rear side efficiencies of 19.8% and 16.4%, respectively. Additionally, Meyer Burger certified a full-size PERC+ SWCT module according to the IEC 61215 norm thereby demonstrating the long term reliability of this novel module technology. |
| Databáze: | OpenAIRE |
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