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ECN publicatie:
Titel:
Influence of defect type on hydrogen passivation efficacy in multicrystalline silicon solar cells
 
Auteur(s):
Bertoni, M.I.; Hudelson, S.; Newman, B.K.; Fenning, D.P. ; Dekkers, H.F.W.; Cornagliotti, E.; Zuschlag, A.; Micard, G.; Hahn, G.; Coletti, G.; Lai, B.; Buonassisi, T.
 
Gepubliceerd door: Publicatie datum:
ECN Zonne-energie 7-12-2010
 
ECN publicatienummer: Publicatie type:
ECN-W--10-061 Artikel wetenschap tijdschrift
 
Aantal pagina's:
5  

Gepubliceerd in: Progress in Photovoltaics: Research and Applications (John Wiley & Sons Ltd.), , 2010, Vol.published online November 24, p.-.

Samenvatting:
We examine the effectiveness of hydrogen passivation as a function of defect type and microstructure at grain boundaries (GBs) in multicrystalline silicon. We analyze a solar cell with alternating mm-wide bare and SiNx-coated stripes using laser-beam-induced current, electron backscatter diffraction, X-ray fluorescence microscopy, and defect etching to correlate pre- and post-hydrogenation recombination activity with GB character, density of iron-silicide nanoprecipitates, and dislocations. A strong correlation was found between GB recombination activity and the nature/density of etch pits along the boundaries, while iron silicide precipitates above detection limits were found to play a less significant role.

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