Influence of defect type on hydrogen passivation efficacy in multicrystalline silicon solar cells
نویسندگان
چکیده
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 SiN.,-coated stripes us ing laser-beam-i nduced current, electron backscatter diffraction, X-ray fluorescence microscopy, and defect etching to correlate preand 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 playa less significant role.
منابع مشابه
Microwave Induced Remote Hydrogen Plasma (mirhp) Passivation of Multicrystalline Silicon Solar Cells
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