TY - GEN
T1 - Impact of defect type on hydrogen passivation effectiveness in multicrystalline silicon solar cells
AU - Bertoni, M. I.
AU - Udelson, S.
AU - Newman, B. K.
AU - Bernardis, S.
AU - Fenning, D. P.
AU - Dekkers, H. F.W.
AU - Cornagliotti, E.
AU - Zuschlag, A.
AU - Micard, G.
AU - Hahn, G.
AU - Coletti, G.
AU - Lai, B.
AU - Buonassisi, T.
PY - 2010
Y1 - 2010
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=78650130005&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=78650130005&partnerID=8YFLogxK
U2 - 10.1109/PVSC.2010.5616904
DO - 10.1109/PVSC.2010.5616904
M3 - Conference contribution
AN - SCOPUS:78650130005
SN - 9781424458912
T3 - Conference Record of the IEEE Photovoltaic Specialists Conference
SP - 345
EP - 346
BT - Program - 35th IEEE Photovoltaic Specialists Conference, PVSC 2010
T2 - 35th IEEE Photovoltaic Specialists Conference, PVSC 2010
Y2 - 20 June 2010 through 25 June 2010
ER -