In-process Evaluation of Electrical Properties of CIGS Solar Cells Scribed with Laser Pulses of Different Pulse Lengths
| Autor: | Pierre Lorenz, Lukas Bayer, Christian Scheit, Klaus Zimmer, Xi Wang, Martin Ehrhardt, Alexander Braun |
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| Rok vydání: | 2014 |
| Předmět: |
Range (particle radiation)
Interconnection Materials science business.industry laser scribing parallel resistance CIGS Physics and Astronomy(all) Laser 7. Clean energy Copper indium gallium selenide solar cells law.invention Pulse (physics) solar cell Wavelength Optics law integrated interconnection Solar cell Optoelectronics business Laser scribing |
| Zdroj: | Physics Procedia. 56:1024-1033 |
| ISSN: | 1875-3892 |
| DOI: | 10.1016/j.phpro.2014.08.014 |
| Popis: | The optimization of laser scribing for the interconnection of CIGS solar cells is a current focus of laser process development. In addition to the geometry of the laser scribes the impact of the laser patterning to the electrical properties of the solar cells has to be optimized with regards to the scribing process and the laser sources. In-process measurements provide an approach for reliable evaluation of the electrical characteristics. In particular, the parallel resistanceR p that was calculated from the measured I–V curves was measured in dependence on the scribing parameters of a short-pulsed ns laser in comparison to a standard ps laser at a wavelength of 1.06 μm. With low pulse overlap of ∼20% a reduction of R p to 2/3 of the initial value has been achieved for ns laser pulses. In comparison to ps laser slightly more defects were observed at the investigated parameter range. |
| Databáze: | OpenAIRE |
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