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ECN publication
An industrial multi-crystalline EWT solar cell with screen printed metallisation
Published by: Publication date:
ECN Solar Energy 1997
ECN report number: Document type:
ECN-RX--97-035 Article (scientific)
Number of pages:

Published in: Paper, presented at the 14th European photovoltaic solar energy conference and exhibition, 30 June - 4 July, 1997, Barcelona, Sp (), , , Vol., p.-.

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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