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Title:
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Higher efficiency for thin multi crystalline silicon solar cells by improving the rear surface passivation
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Author(s):
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Published by:
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Publication date:
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ECN
Solar Energy
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1-5-2002
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ECN report number:
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Document type:
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ECN-RX--02-022
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Conference Paper
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Number of pages:
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Full text:
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4
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Download PDF
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Presented at: 29th IEEE Photovoltaic Specialists Conference, New Orleans, USA, 20-24 mei 2002.
Abstract:
For wafers thicker than 200 urn, the efficiency of industrial multicrystalline silicon solar cells is independent of wafer thickness. An
important efficiency limitation of these thin solar cells is the poor
rear surface passivation due to the short minority carrier diffusion
length of the aluminium BSF. The most likely reason for the poor quality
of the BSF is the poor crystallinity of the BSF due to fast cooling
of the cells during metallisation firing. Possible solutions to overcome
this limitation are presented.
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