IBC4EU: First Results of Industrialization of Low Cost, High Efficiency IBC Technology: WIP-Munich

inproceedings
2024
authors
Buchholz, Florian and Tune, Daniel and Messmer, Tobias and Linke, Jonathan and Prasad, Manjunath and Mihailetchi, Valentin and Ulbikas, Juras and Dahle, Arne and Meereboer, Martijn and Fabris, Francesca and Eikelboom, Erik and Borgers, Tom and van Dyck, Rik and Duerinckx, Filip and Sivaramakrishnan, Hariharsudan and Harrison, Samuel and Kester, Josco and Guillevin, Nicolas and Kroon, Jan and Mertens, Verena and Dullweber, Thorsten and Shochet, Ofer and Rosen, Isaac and Röver, Ingo and Palitzsch, Wolfram and Zaror, Yasmin and Stierstorfer, Johnnes and Radzevicius, Aurimas and Lukinskas, Povilas and Denafas, Julius and Vanhanen, Tuomas and Savisalo, Tuukka and Pospischil, Maximilian and Breitenbücher, Marian and Co\cskun, Özlem and de lÉpine, Melodie and Mac\é, Philippe
doi:10.4229/EUPVSEC2024/1BO.4.3

abstract

This paper introduces the Horizon Europe project IBC4EU with the goal to establish a European value chain based on innovative passivated contact back contact solar cells and modules. The two key solar cell technologies -- POLO-IBC and polyZEBRA -- are introduced. We present simulation studies and experiments on the suitability of bulk resistance ranges for use in the two solar cell concepts indicating best solar cell efficiencies for similarly low resistance values as standard TOPCon solar cells. The higher the minority carrier lifetime of the given material, the smaller this impact becomes. The p-type based solar cell (POLO-IBC) shows to require a more confined range that is slightly higher in sheet resistance than the standard PERC requirements. Reliability data on the cells (LeTID) and modules (DH, TC) proves the excellent long-term stability of the n-typed back contact cells and modules. In addition, an innovative way to interconnect the IBC cells based on printed conductive patterns printed on glass is introduced as well as a novel recycling route for state-of-the-art back contact solar cells. bulk resistance ranges for use in the two solar cell concepts indicating best solar cell efficiencies for similarly low resistance values as standard TOPCon solar cells. The higher the minority carrier lifetime of the given material, the smaller this impact becomes. The p-type based solar cell (POLO-IBC) shows to require a more confined range that is slightly higher in sheet resistance than the standard PERC requirements. Reliability data on the cells (LeTID) and modules (DH, TC) proves the excellent long-term stability of the n-typed back contact cells and modules. In addition, an innovative way to interconnect the IBC cells based on printed conductive patterns printed on glass is introduced as well as a novel recycling route for state-of-the-art back contact solar cells.