Laser induced quasi-periodical microstructures with external field modulation for efficiency gain in photovoltaics

verfasst von

Ludger Overmeyer, Viktor Schütz, Alexander Horn, Uwe Stute

Abstract

The overall reflectivity of silicon is decreased by 10% altering the surface topology by ultra-short pulsed laser ablation and resulting in an efficiency increase of solar cells. The size of quasi-periodical μm-structures on the surface can be defined by the applied laser parameters. The topology is additionally adapted in size and distance of the microstructures at constant laser parameters with a specifically applied external electrical field leading to a cone-like microstructure with an adjustable light-trapping geometry. On large scale multicrystalline silicon solar wafers with a laser generated μm-scale surface topology were processed into cells with an absolute efficiency gain.

Externe Organisation(en)

Laser Zentrum Hannover e.V. (LZH)

Typ

Artikel

Journal

CIRP Annals - Manufacturing Technology

Band

62

Seiten

207-210

Anzahl der Seiten

4

ISSN

0007-8506

Publikationsdatum

06.05.2013

Publikationsstatus

Veröffentlicht

Peer-reviewed

Ja

ASJC Scopus Sachgebiete

Maschinenbau, Wirtschaftsingenieurwesen und Fertigungstechnik

Ziele für nachhaltige Entwicklung

SDG 7 – Erschwingliche und saubere Energie

Elektronische Version(en)

https://doi.org/10.1016/j.cirp.2013.03.110 (Zugang: Unbekannt)