Title:	Influence of Spacial and Temporal Laser Beam Characteristics on Thin-Film Ablation
Author(s):	P.-O. Westin, S.C. Schmidt, M. Hüske, M. Edoff
Keywords:	Contact, Laser Processing, Cu (InGa) Se2
Topic:	Thin Films Solar Cells
Subtopic:	CdTe Solar Cells
Event:	24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany
Session:	3BV.5.91
Pages:	3087 - 3090
ISBN:	3-936338-25-6
Paper DOI:	10.4229/24thEUPVSEC2009-3BV.5.91
Price:	0,00 EUR
Document(s):	paper

Abstract/Summary:

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In an endeavor to explore the use of laser scribing to replace mechanical scribing in CIGS thin-film PV module production we have evaluated the possibility of P3 patterning using a picosecond laser. We found that picosecond laser scribing can be used to remove the semiconductor layers ZnO:Al and CIGS simultaneously as well as selectively removing only the ZnO:Al layer. Selective removal was deemed superior both from a processing point of view and from electrical device results. Picosecond patterning resulted in a clean and sharply defined P3 isolation scribe with minimal damage to the underlying CIGS layer. Devices made during this work were in part patterned uniquely by laser methods, including the P2 pattern.