Laser process for extended silicon thin film solar cells

Hessmann MT, Kunz T, Burkert I, Gawehns N, Schaefer L, Frick T, Schmidt M, Meidel B, Auer R, Brabec C (2011)

Publication Language: English

Publication Status: Published

Publication Type: Journal article, Original article

Publication year: 2011

Journal

Thin Solid Films Elsevier

Book Volume: 520

Pages Range: 595-599

Journal Issue: 1

DOI: 10.1016/j.tsf.2011.07.031

Abstract

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.

Authors with CRIS profile

Michael Schmidt Lehrstuhl für Photonische Technologien Christoph Brabec Institute Materials for Electronics and Energy Technology (i-MEET)

Additional Organisation(s)

Lehrstuhl für Photonische Technologien

Involved external institutions

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

How to cite

APA:

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. https://dx.doi.org/10.1016/j.tsf.2011.07.031

MLA:

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

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