High efficiency n-type metal wrap through cells and modules using industrial processes
conference paper
Tool, C.J.J.
Späth, M.
Broek, K.M.
Kossen, E.J.
Koppes, M.
Gutjahr, A.
Geerligs, L.J.
Slooff, L.H.
Romijn, I.G.
Jingfeng, Xiong
Zhiyan, Hu
Gaofei, Li
Guillevin, N.
Aken, B.B. van
Bende, E.E.
Bennett, I.J.
Jianming, Wang
Ziqian, Wang
Anker, J.
Bo, Yu
Shuquan, Tian
Zhiliang, Wan
Okel, L.A.G.
Zhai, jiny.
Späth, M.
Broek, K.M.
Kossen, E.J.
Koppes, M.
Gutjahr, A.
Geerligs, L.J.
Slooff, L.H.
Romijn, I.G.
Jingfeng, Xiong
Zhiyan, Hu
Gaofei, Li
Guillevin, N.
Aken, B.B. van
Bende, E.E.
Bennett, I.J.
Jianming, Wang
Ziqian, Wang
Anker, J.
Bo, Yu
Shuquan, Tian
Zhiliang, Wan
Okel, L.A.G.
Zhai, jiny.
We report on our high efficiency n-type metal-wrap-through (MWT) cell and module technology. In this work, bifacial n-type MWT cells are produced by industrial processes in industrial full-scale and pilot-scale process equipment. The n-type cells benefit from high recombination lifetime in the wafer and bifaciality. When combined with MWT technology, high-power back-contact modules result, which can employ also very thin cells. We will discuss optimization of the MWT contact layout and impact on paste consumption, showing how MWT technology, like multi-busbar technology, can support very low paste consumption while increasing efficiencies at the same time. We report a cell conversion efficiency of 21% (in-house measurement on a not conducting, but reflecting chuck), a significant gain compared to our earlier work. Full-size modules (60 cells) have been made with power exceeding 300Wp and cell-to-module ratios of the different I-V parameters are discussed. Modules from cells with average efficiency of 20.9% are pending. This work shows that low-cost n-type bifacial cells are suitable for industrial high efficiency back-contact technology.
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TNO Identifier
822029
Publisher
ECN
Collation
6 p.
Place of publication
Petten
Pages
6 p.
Files