Laser induced quasi-periodical microstructures with external field modulation for efficiency gain in photovoltaics
- authored by
- 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.
- External Organisation(s)
-
Laser Zentrum Hannover e.V. (LZH)
- Type
- Article
- Journal
- CIRP Annals - Manufacturing Technology
- Volume
- 62
- Pages
- 207-210
- No. of pages
- 4
- ISSN
- 0007-8506
- Publication date
- 06.05.2013
- Publication status
- Published
- Peer reviewed
- Yes
- ASJC Scopus subject areas
- Mechanical Engineering, Industrial and Manufacturing Engineering
- Sustainable Development Goals
- SDG 7 - Affordable and Clean Energy
- Electronic version(s)
-
https://doi.org/10.1016/j.cirp.2013.03.110 (Access:
Unknown)
