@article{Schulte-Huxel2024,

title = {Novel busbar design for screen-printed front side Al metallization of high-efficiency solar cell},

author = {H Schulte-Huxel and T Daschinger and B Min and T Brendemühl and R Brendel},

doi = {10.1016/j.solmat.2023.112601},

issn = {0927-0248},

year  = {2024},

date = {2024-01-01},

urldate = {2024-01-01},

journal = {Solar Energy Materials and Solar Cells},

volume = {264},

pages = {112601},

abstract = {The need to reduce the silver consumption for future global PV production requires novel approaches for cell metallization and module integration. A screen-printed aluminum cell metallization on the front side could contribute here, but requires a redesign of the solder pads and busbars. A compromise between shading and resistive losses is needed. We investigate the inclusion of Ag solder pads in high-aspect-ratio Al finger grids on the front side of p-type back junction solar cells featuring passivating polysilicon on oxide (POLO) contacts on the rear side. In order to determine the optimal geometric dimensions of the solder pads, we characterize the resistance at the interface between the Ag solder pads and the Al finger grid in dependence on the size of the overlap between the two paste. A contact resistance of 285 mΩ is determined for 200 μm-narrow Al busbars and small solder pads of 750 μm in length. This would require tens of solder pads per busbar for acceptable power losses below 0.5 % coming along with significant shading. Therefore, a new metallization design is developed. We use narrow Ag busbars with a widened intersection to the Al fingers in order to reduce the contact resistance caused by the Ag–Al alloy. Thereby, the shading losses of the solderable busbars and pads are less than 1.5 %.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Schulte-Huxel2015b,

title = {Analysis of thermal processes driving laser-welding of aluminum deposited on glass substrates for module interconnection of silicon solar cells},

author = {H Schulte-Huxel and S Kajari-Schröder and R Brendel},

doi = {10.1109/JPHOTOV.2015.2478027},

year  = {2015},

date = {2015-11-01},

journal = {IEEE Journal of Photovoltaics},

volume = {5},

number = {6},

pages = {1606-1612},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Schulte-Huxel2015c,

title = {Interconnection of busbar-free back contacted solar cells by laser welding},

author = {H Schulte-Huxel and S Blankemeyer and A Merkle and V Steckenreiter and S Kajari-Schröder and R Brendel},

doi = {10.1002/pip.2514},

year  = {2015},

date = {2015-08-01},

journal = {Progress in Photovoltaics: Research and Applications},

volume = {23},

number = {8},

pages = {1057-1065},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{SCHULTEHUXEL2014356,

title = {Laser-welded Interconnection of Screen-printed Si Solar Cells},

author = {H Schulte-Huxel and S Blankemeyer and V Steckenreiter and S Kajari-Schröder and R Brendel},

doi = {10.1016/j.egypro.2014.08.102},

issn = {1876-6102},

year  = {2014},

date = {2014-09-19},

journal = {Energy Procedia},

volume = {55},

pages = {356-360},

note = {Proceedings of the 4th International Conference on Crystalline Silicon Photovoltaics (SiliconPV 2014)},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{SCHULTEHUXEL2014361,

title = {Two-level Metallization and Module Integration of Point-contacted Solar Cells},

author = {H Schulte-Huxel and U Römer and S Blankemeyer and A Merkle and Y Larionova and V Steckenreiter and R Peibst and S Kajari-Schroeder and R Brendel},

doi = {10.1016/j.egypro.2014.08.104},

issn = {1876-6102},

year  = {2014},

date = {2014-09-19},

journal = {Energy Procedia},

volume = {55},

pages = {361-368},

note = {Proceedings of the 4th International Conference on Crystalline Silicon Photovoltaics (SiliconPV 2014)},

keywords = {},

pubstate = {published},

tppubtype = {article}

}