2017 Impact factor 2.240

EPJ Plus Highlight - Ultrafast laser for crafting ever thinner solar cells

Interaction between ultrashort pulse laser and a target.

Solar-cell efficiency depends on how thin it can be manufactured. Now, a new model exploits femtosecond laser sources to get higher efficiency at lower cost

The race for ever more efficient and cheaper solar cells tests the limits of manufacturing. To achieve this, photovoltaic solar cells need to become thinner and are made of more complex inner structures. Now, Italian scientists have investigated and expanded a model elucidating the dominant physical processes when ultra-fast lasers are used in manufacturing solar cells to these specifications. An article by Alberto Gurizzan and Paolo Villoresi from the University of Padova in Italy detailing this model has now been published in EPJ Plus.

The authors rely on ultra-fast lasers, to develop a process called ablation, used to allow the formation of the metal contacts. It involves selectively removing the upper dielectric layer of the photovoltaic cell material without damaging the semiconductor beneath. Compared to previous methods, it offers many advantages - it reduces heat damage while improving the precision, energy efficiency and speed of the process.

Paolo Biscari
Thank you very much for your assistance and quick and excellent handling of the manuscript.

Jakub Bielecki, Institute of Nuclear Physics, Polish Academy of Sciences, Krakow, Poland

ISSN: 2190-5444 (Electronic Edition)

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