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Hydrogenation effect on low temperature internal gettering in multicrystalline silicon
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Al-Amin, Mohammad and Murphy, John D. (2016) Hydrogenation effect on low temperature internal gettering in multicrystalline silicon. In: 43rd IEEE Photovoltaic Specialists Conference, Portland, Oregon, USA, 5-10 Jun 2016. Published in: Proceedings of the 2016 IEEE 43rd Photovoltaic Specialists Conference (PVSC) 0585-0590. ISBN 9781509027255.
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WRAP_1271877-es-040616-ieee_pvsc_2016.pdf - Accepted Version - Requires a PDF viewer. Download (1168Kb) |
Official URL: http://dx.doi.org/10.1109/PVSC.2016.7749664
Abstract
We have performed a comprehensive study into low temperature ( 500 °C) internal gettering in multicrystalline silicon (mc-Si). Two groups of as-grown mc-Si wafers from different ingot height positions were subjected to the same thermal treatments with surface passivation by either silicon nitride (SiNx:H) or a temporary iodine-ethanol (I-E) chemical solution . With either passivation scheme, lifetime in the relatively low lifetime samples from the bottom of the ingot improves substantially. There are however key passivation-dependent differences in behavior in other parts of the ingot. Lifetime in relatively good wafers from the middle of the ingot is improved significantly with silicon nitride passivation but not with iodine-ethanol, for which substantial reductions in lifetime initially occur. There are also key differences in the internal gettering behavior of bulk iron. We suggest the differences arise because silicon nitride introduces hydrogen into the bulk, whereas the iodine-ethanol does not.
| Item Type: | Conference Item (Paper) | ||||||
|---|---|---|---|---|---|---|---|
| Subjects: | Q Science > QD Chemistry | ||||||
| Divisions: | Faculty of Science > Engineering | ||||||
| Library of Congress Subject Headings (LCSH): | Hydrogenation, Silicon, Getters | ||||||
| Journal or Publication Title: | Proceedings of the 2016 IEEE 43rd Photovoltaic Specialists Conference (PVSC) | ||||||
| Publisher: | IEEE | ||||||
| ISBN: | 9781509027255 | ||||||
| Official Date: | 21 November 2016 | ||||||
| Dates: |
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| Date of first compliant deposit: | 7 June 2016 | ||||||
| Page Range: | 0585-0590 | ||||||
| Status: | Peer Reviewed | ||||||
| Publication Status: | Published | ||||||
| Access rights to Published version: | Restricted or Subscription Access | ||||||
| Funder: | Engineering and Physical Sciences Research Council (EPSRC), Royal Society (Great Britain), Royal Academy of Engineering (Great Britain) | ||||||
| Grant number: | EP/J01768X/2, EP/M024911/1 (EPSRC) RG100076 Royal Society (Great Britain) | ||||||
| Conference Paper Type: | Paper | ||||||
| Title of Event: | 43rd IEEE Photovoltaic Specialists Conference | ||||||
| Type of Event: | Conference | ||||||
| Location of Event: | Portland, Oregon, USA | ||||||
| Date(s) of Event: | 5-10 Jun 2016 | ||||||
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