Details
| Original language | English |
|---|---|
| Pages (from-to) | 207-210 |
| Number of pages | 4 |
| Journal | CIRP Annals - Manufacturing Technology |
| Volume | 62 |
| Issue number | 1 |
| Publication status | Published - 6 May 2013 |
| Externally published | Yes |
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.
Keywords
- Energy efficiency, Laser micro machining, Silicon
ASJC Scopus subject areas
- Engineering(all)
- Mechanical Engineering
- Engineering(all)
- Industrial and Manufacturing Engineering
Sustainable Development Goals
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In: CIRP Annals - Manufacturing Technology, Vol. 62, No. 1, 06.05.2013, p. 207-210.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Laser induced quasi-periodical microstructures with external field modulation for efficiency gain in photovoltaics
AU - Overmeyer, Ludger
AU - Schütz, Viktor
AU - Horn, Alexander
AU - Stute, Uwe
PY - 2013/5/6
Y1 - 2013/5/6
N2 - 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.
AB - 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.
KW - Energy efficiency
KW - Laser micro machining
KW - Silicon
UR - http://www.scopus.com/inward/record.url?scp=84878847404&partnerID=8YFLogxK
U2 - 10.1016/j.cirp.2013.03.110
DO - 10.1016/j.cirp.2013.03.110
M3 - Article
AN - SCOPUS:84878847404
VL - 62
SP - 207
EP - 210
JO - CIRP Annals - Manufacturing Technology
JF - CIRP Annals - Manufacturing Technology
SN - 0007-8506
IS - 1
ER -