Publikation: Impact of defect type on hydrogen passivation effectiveness in multicrystalline silicon solar cells
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In this work we examine the effectiveness of hydrogen passivation at grain boundaries as a function of defect type and microstructure in multicrystalline silicon. We analyze a specially prepared solar cell with alternating mm-wide bare and SiNx-coated stripes using laser beam-induced current (LBIC), electron backscatter diffraction (EBSD), synchrotron-based X-ray fluorescence microscopy (μ-XRF), and defect etching to correlate pre- and post-hydrogenation recombination activity with grain boundary character, density of iron-silicide nanoprecipitates, and dislocations. This study reveals that the microstructure of boundaries that passivate well and those that do not differ mostly in the character of the dislocations along the grain boundary, while iron silicide precipitates along the grain boundaries (above detection limits) were found to play a less significant role.
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BERTONI, Mariana I., Steve HUDELSON, Bonna Kay NEWMAN, Sarah BERNARDIS, David P. FENNING, H.F.W. DEKKERS, E. CORNAGLIOTTI, Annika ZUSCHLAG, Gabriel MICARD, Giso HAHN, Gianluca COLETTI, Barry LAI, Tonio BUONASSISI, 2010. Impact of defect type on hydrogen passivation effectiveness in multicrystalline silicon solar cells. 2010 35th IEEE Photovoltaic Specialists Conference (PVSC). Honolulu, HI, USA, 20. Juni 2010 - 25. Juni 2010. In: 2010 35th IEEE Photovoltaic Specialists Conference. IEEE, 2010, pp. 000345-000346. ISBN 978-1-4244-5890-5. Available under: doi: 10.1109/PVSC.2010.5616904BibTex
@inproceedings{Bertoni2010-06Impac-15953, year={2010}, doi={10.1109/PVSC.2010.5616904}, title={Impact of defect type on hydrogen passivation effectiveness in multicrystalline silicon solar cells}, isbn={978-1-4244-5890-5}, publisher={IEEE}, booktitle={2010 35th IEEE Photovoltaic Specialists Conference}, pages={000345--000346}, author={Bertoni, Mariana I. and Hudelson, Steve and Newman, Bonna Kay and Bernardis, Sarah and Fenning, David P. and Dekkers, H.F.W. and Cornagliotti, E. and Zuschlag, Annika and Micard, Gabriel and Hahn, Giso and Coletti, Gianluca and Lai, Barry and Buonassisi, Tonio} }
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