InImpact: The Journal of Innovation Impact |
| Publisher |
Future Technology Press |
| Vol. 7 No. 2 |
KES Transactions on SDM I - Sustainable Design and Manufacturing 2014 |
| Volume Editors |
KES International |
| Journal ISSN |
2051-6002 |
| |
| Article Title | Investigations on repetition rate and laser wavelength for efficient generation of black silicon solar cells |
| Primary Author | Viktor Schütz, Laser Zentrum Hannover e.V. |
| Other Author(s) |
Jürgen Koch; Oliver Suttmann; Ludger Overmeyer
|
| Pages |
936 - 949
|
| Article ID |
sdm14-077 |
| Publication Date |
01-May-16 |
| Abstract | Ultra-short pulsed laser radiation applied on silicon decreases the reflectivity by modifying the surface topology by ablation to achieve a so called “black silicon” texture. A multitude of laser processing parameters are investigated in order to classify the reflectivity reduction. Exemplarily, 5-inch mc-silicon solar wafers are machined in a first step with high throughput using a linear 7-foci diffractive optical element (DOE). In a second step, solar cells are built up to determine the efficiency gain by the laser surface modification. A preliminary absolute efficiency gain of ?? > 0.2 % is achieved at an absolute reflectivity reduction of globally 11.2 % in comparison to a conventional isotexture. |
| | View Paper |
