Articles with "upgraded metallurgical" as a keyword



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Influence of metal assisted chemical etching time period on mesoporous structure in as-cut upgraded metallurgical grade silicon for solar cell application

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Published in 2019 at "Journal of Materials Science: Materials in Electronics"

DOI: 10.1007/s10854-019-01191-6

Abstract: In this work, upgraded metallurgical grade silicon (UMG-Si) wafer was used to fabricate mesoporous nanostructures, as an effective antireflection layer for solar photovoltaic cells. The length of the vertical Si nanostructure (SiNS) arrays was altered… read more here.

Keywords: time period; upgraded metallurgical; metallurgical grade; silicon ... See more keywords

Solar Cells Fabricated in Upgraded Metallurgical Silicon, Obtained Through Vacuum Degassing and Czochralski Growth

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Published in 2018 at "Silicon"

DOI: 10.1007/s12633-018-9860-x

Abstract: Upgraded metallurgical grade silicon (UMG-Si) was obtained through metallurgical methods using two steps. First, metallurgical grade silicon was purified by the vacuum degassing technique using an electron-beam system. An ingot was then produced through Czochralski… read more here.

Keywords: czochralski growth; vacuum degassing; upgraded metallurgical; cells fabricated ... See more keywords
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Methods to Improve Bulk Lifetime in n-Type Czochralski-Grown Upgraded Metallurgical-Grade Silicon Wafers

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Published in 2018 at "IEEE Journal of Photovoltaics"

DOI: 10.1109/jphotov.2018.2834944

Abstract: This paper investigates the potential of three different methods—tabula rasa (TR), phosphorus diffusion gettering (PDG), and hydrogenation, for improving the carrier lifetime in n-type Czochralski-grown upgraded metallurgical-grade (UMG) silicon samples. Our results show that the… read more here.

Keywords: lifetime type; czochralski grown; upgraded metallurgical; type ... See more keywords