2BO.12.5 Q CELLS Silicon Solar Cells of > 24% Efficiency Fabricated with Mass-Production Processes
Tuesday, 7th September 2021
10:30 - 12:00
F. Fertig, B. Klöter, I. Höger, K. Petter, E. Jarzembowski, M. Junghänel, C. Klenke, A. Weihrauch, M. Schley, K. Kim, A. Schwabedissen, M. Kauert, K. Duncker, J. Cieslak, R. Hönig, J. Scharf, F. Kersten, S. Wasmer, C. Ke, C. Baer, C. Gerbig, L. Burtone, L. Niebergall, M. Schütze, S. Schulz, S. Peters, A. Mette, M. Schaper, M. Fischer, J.W. Müller
Presenter / Speaker:
F. Fertig, Hanwha Q CELLS, Bitterfeld-Wolfen, Germany
Within the last years, Q CELLS has developed a silicon solar cell structure yielding an energy conversion efficiency of more than 24%. The cell structure features a passivating contact on the rear side, double-sided screen-printed metal contacts, a module-optimized anti-reflective coating (ARC), a homogeneous front-side emitter and an n-type silicon substrate. For the fabrication of this solar cell, a lean processing sequence has been applied by using exclusively mass-production processes in Q CELLS’ pilot R&D line in Thalheim, Germany. For module integration, state-of-the-art technology such as half-cells, multi-wire interconnection, standard encapsulants and zero-gap technology can be applied. Hence, this solar cell structure has the potential to fully close the small remaining gap to the highest-efficiency cell technologies such as heterojunction and rear-contact solar cells at very competitive manufacturing cost. In analogy to Q CELLS’ Q.ANTUM technology and in contrast to conventional passivated emitter and rear cells (PERC), this novel solar cell is shown to reliably suppress light-induced degradation.