Development and Mass Production of Bifacial Q.ANTUM p-Cz PERC Cells
2019
Hanwha Q CELLS has developed bifacial p-Cz PERC cells with average efficiency in mass production above 22%, measured with 1000 W/m² front illumination. The bifaciality factor of the cells is determined to be 78%. A comparison of bifacial vs. equivalent monofacial cells shows that the bifacial cells have slightly lower front efficiency by 0.1%. However, at the module-level there is essentially no gap in front power performance of bifacial vs. monofacial, due to a better cell-to-module ratio for bifacial. Bifacial modules with 144 half-cells having average power of 390 W on the front and 286 W rear are demonstrated.
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