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Innovative applications of laser technology in photovoltaics

Use of suitable laser systems for photovoltaic devices production has received great attention in recent years, and lasers today's applications range from panel patterning to advanced doping. Mainly when crystalline and polycrystalline silicon are concerned, it seems that lasers can be usefully used to get high efficiency devices in industrial production plants. In this paper, we describe our studies on advanced laser applications for silicon solar cells processing: grooving, texturing, and doping experiments are reported, both on simple structures and on devices, with efficiency values ranging from 15.0% to 16.5%, according to the particular design used. Future developments on schedule in our laboratory, devised to increase cells efficiency and to facilitate lasers use in industrial plants are briefly overviewed.