Laser process for extended silicon thin film solar cells

Journal article
(Original article)

Publication Details

Author(s): Hessmann MT, Kunz T, Burkert I, Gawehns N, Schaefer L, Frick T, Schmidt M, Meidel B, Auer R, Brabec C
Journal: Thin Solid Films
Publication year: 2011
Volume: 520
Journal issue: 1
Pages range: 595-599
ISSN: 0040-6090
Language: English


We present a large area thin film base substrate for the epitaxy of crystalline silicon. The concept of epitaxial growth of silicon on large area thin film substrates overcomes the area restrictions of an ingot based monocrystalline silicon process. Further it opens the possibility for a roll to roll process for crystalline silicon production. This concept suggests a technical pathway to overcome the limitations of silicon ingot production in terms of costs, throughput and completely prevents any sawing losses. The core idea behind these thin film substrates is a laser welding process of individual, thin silicon wafers. In this manuscript we investigate the properties of laser welded monocrystalline silicon foils (100) by micro-Raman mapping and spectroscopy. It is shown that the laser beam changes the crystalline structure of float zone grown silicon along the welding seam. This is illustrated by Raman mapping which visualizes compressive stress as well as tensile stress in a range of - 147.5 to 32.5 MPa along the welding area. © 2011 Elsevier B.V.

FAU Authors / FAU Editors

Brabec, Christoph Prof. Dr.
Institute Materials for Electronics and Energy Technology (i-MEET)

External institutions with authors

Bayerisches Laserzentrum gemeinnützige Forschungsgesellschaft mbH (BLZ)
Bayerisches Zentrum für Angewandte Energieforschung e.V. (ZAE Bayern)
Wacker Schott Solar GmbH

How to cite

Hessmann, M.T., Kunz, T., Burkert, I., Gawehns, N., Schaefer, L., Frick, T.,... Brabec, C. (2011). Laser process for extended silicon thin film solar cells. Thin Solid Films, 520(1), 595-599.

Hessmann, M. T., et al. "Laser process for extended silicon thin film solar cells." Thin Solid Films 520.1 (2011): 595-599.


Last updated on 2018-13-12 at 13:50