Laser structuring for back junction silicon solar cells

authored by
Peter Engelhart, Nils Peter Harder, Rainer Grischke, Agnes Merkle, Rüdiger Meyer, Rolf Brendel
Abstract

We demonstrate mask-free fabrication of a 22.0%-efficient crystalline Si solar cell by applying laser ablation of Si and by laser ablation of protective coatings. The bulk absorber material is a p-type float zone silicon wafer and the designated cell area is 4 cm2. While the processing time of our laboratory-type of laser system is far too slow for industrial processing, we estimate on the basis of our experiments that laser processing of 12.5 × 12.5 cm2-sized solar cells in just a few seconds is feasible with commercially available equipment.

External Organisation(s)
Institute for Solar Energy Research (ISFH)
Type
Article
Journal
Progress in Photovoltaics: Research and Applications
Volume
15
Pages
237-243
No. of pages
7
ISSN
1062-7995
Publication date
05.2007
Publication status
Published
Peer reviewed
Yes
ASJC Scopus subject areas
Electronic, Optical and Magnetic Materials, Renewable Energy, Sustainability and the Environment, Condensed Matter Physics, Electrical and Electronic Engineering
Sustainable Development Goals
SDG 7 - Affordable and Clean Energy
Electronic version(s)
https://doi.org/10.1002/pip.732 (Access: Closed)