@inproceedings{Kajari-Schröder2017,

title = {Towards Multi Millisecond Spatially Homogeneous Carrier Lifetimes from Epitaxial Silicon Wafers Grown on Porous Silicon},

author = {S Kajari-Schröder and C Gemmel and J Hensen and R Brendel},

editor = {WIP},

doi = {10.4229/EUPVSEC20172017-2BO.3.5},

isbn = {3-936338-47-7},

year  = {2017},

date = {2017-09-26},

booktitle = {Proceedings of the 33rd European Photovoltaic Solar Energy Conference and Exhibition},

pages = {339-342},

address = {Amsterdam, The Netherlands},

abstract = {Kerfless wafering is receiving renewed attention internationally due to a) the need of PV industry to realize cost savings and to enhance resource efficiency along the value chain and b) due to the recent step by step demonstrations of key components for the implementation of kerfless wafers in mainstream photovoltaics: high electronic quality of the kerfless wafers, suitability for existing machinery (drop-in replacement), and high solar cell efficiencies. We use the porous silicon (PSI) process for the fabrication of kerfless monocrystalline silicon wafers. Here, we analyze the PSI wafer quality by analyzing the injectiondependent carrier lifetimes of the samples with infrared lifetime mappings and photo conductance decay measurements. We evaluate the reorganization of the PSI by scanning electron microscopy (SEM). We successfully lift-off 7 out of 7 epitaxial PSI wafers on an area of 10 x 10 cm2 pseudosquare. The effective lifetimes of these layers range from 836 to 1022 μs at an injection level of n=10^15 cm-3 and the lifetime is spatially homogeneous on the wafer area.},

keywords = {},

pubstate = {published},

tppubtype = {inproceedings}

}

@inproceedings{Schäfer2015,

title = {Macroporous blind holes as surface texture for high efficiency silicon solar cells},

author = {S Schäfer and D Turkay and C Gemmel and S Kajari-Schröder and R Brendel},

editor = {WIP},

doi = {10.4229/EUPVSEC20152015-2DO.2.1},

isbn = {3-936338-39-6},

year  = {2015},

date = {2015-09-14},

booktitle = {Proceedings of the 31st European Photovoltaic Solar Energy Conference},

journal = {Proceedings of the 31st European Photovoltaic Solar Energy Conference},

pages = {457-461},

address = {Hamburg, Germany},

keywords = {},

pubstate = {published},

tppubtype = {inproceedings}

}

@inproceedings{Haase2012,

title = {High-efficiency back-contact back-junction silicon solar cells with cell thicknesses of 45 µm, 90 µm, 130 µm and 290 µm},

author = {F Haase and R Winter and S Kajari-Schröder and M Nese and R Brendel},

editor = {WIP},

doi = {10.4229/27thEUPVSEC2012-2AO.2.4},

isbn = {3-936338-28-0},

year  = {2012},

date = {2012-09-01},

booktitle = {Proceedings of the 27th European Photovoltaic Solar Energy Conference},

journal = {Proceedings of the 27th European Photovoltaic Solar Energy Conference},

pages = {580-585},

address = {Frankfurt, Germany},

keywords = {},

pubstate = {published},

tppubtype = {inproceedings}

}

@inproceedings{Ernst2012,

title = {Macroporous silicon as an absorber for thin heterojunction solar cells},

author = {M Ernst and R Brendel and R Ferre and N -P Harder and S Kajari-Schröder},

editor = {IEEE},

doi = {10.1109/PVSC.2012.6317781},

isbn = {978-1-4673-0064-3},

year  = {2012},

date = {2012-06-01},

booktitle = {2012 38th IEEE Photovoltaic Specialists Conference},

pages = {001040-001045},

address = {Austin, TX, USA},

keywords = {},

pubstate = {published},

tppubtype = {inproceedings}

}