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Title:
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An industrial multi-crystalline EWT solar cell with screen printed metallisation
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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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1997
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ECN report number:
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Document type:
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ECN-RX--97-035
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Article (scientific)
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Number of pages:
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6
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Published in: Paper, presented at the 14th European photovoltaic solar energy conference and exhibition, 30 June - 4 July, 1997, Barcelona, Sp (), , , Vol., p.-.
Abstract:
The first results from the processing of an emitter wrap-through solarcell (EWT cell) based on 10x10 cm2 multicrystalline silicon solar cell
technology with screen printing technique are shown. The processing
bottlenecks such as laser cutting without material deterioration and the
geometrical limitations due to screen printing techniques and emitter series
resistance are addressed. The characterisation of the EWT solar cells clearly
shows the expected higher photocurrent but fill factor and open circuit
voltage need further improvements. Nevertheless it was possible to develop a
stable processing scheme and cell design that allowed the processing of a
number of EWT cells with reasonable efficiencies to make the first modules.
Thus the advantages of a complete backside contacted module could be
demonstrated by the first standard 36 cell EWT demonstration module. 8 figs.,
6 refs.
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