Publikation: Multicrystalline silicon solar cells from RST ribbon process
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Datum
2012
Autor:innen
De Moro, Fabrice
Focsa, Alexandru
Derbouz, Karim
Slaoui, Abdelilah
Auriac, Nicolas
Lignier, Hélène
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physica status solidi (c). 2012, 9(10-11), pp. 2092-2096. ISSN 1862-6351. eISSN 1610-1642. Available under: doi: 10.1002/pssc.201200087
Zusammenfassung
The aim of Solarforce is the achievement of high efficiency solar cells made out of ≤100 µm thick multicrystalline silicon wafers produced by the Ribbon on Sacrificial Template (RST) process. For a first evaluation of the RST material, solar cells were fabricated on p-type RST wafers with different processes. The first conclusion is that the density of silicon carbide inclusions has to be lowered to obtain better FF values, and in turn a better homogeneity in cell performances. Secondly, conversion efficiency is found to be limited around 14% by low bulk minority carrier lifetime values, limiting both Voc and Leff. ICP-MS analyses on RST material show that this lifetime may be improved with the possible achievement of low metallic impurity content in the wafers, under 1 ppb wt. Further enhancement is also shown to be possible with the n doping of RST material, a well controlled process in ribbon growth.
Zusammenfassung in einer weiteren Sprache
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530 Physik
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mc-Si, ribbon, minority carrier lifetime, solar cells
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DE MORO, Fabrice, Alexandru FOCSA, Karim DERBOUZ, Abdelilah SLAOUI, Nicolas AURIAC, Hélène LIGNIER, Philipp KELLER, 2012. Multicrystalline silicon solar cells from RST ribbon process. In: physica status solidi (c). 2012, 9(10-11), pp. 2092-2096. ISSN 1862-6351. eISSN 1610-1642. Available under: doi: 10.1002/pssc.201200087BibTex
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year={2012},
doi={10.1002/pssc.201200087},
title={Multicrystalline silicon solar cells from RST ribbon process},
number={10-11},
volume={9},
issn={1862-6351},
journal={physica status solidi (c)},
pages={2092--2096},
author={De Moro, Fabrice and Focsa, Alexandru and Derbouz, Karim and Slaoui, Abdelilah and Auriac, Nicolas and Lignier, Hélène and Keller, Philipp}
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<dcterms:abstract xml:lang="eng">The aim of Solarforce is the achievement of high efficiency solar cells made out of ≤100 µm thick multicrystalline silicon wafers produced by the Ribbon on Sacrificial Template (RST) process. For a first evaluation of the RST material, solar cells were fabricated on p-type RST wafers with different processes. The first conclusion is that the density of silicon carbide inclusions has to be lowered to obtain better FF values, and in turn a better homogeneity in cell performances. Secondly, conversion efficiency is found to be limited around 14% by low bulk minority carrier lifetime values, limiting both Voc and Leff. ICP-MS analyses on RST material show that this lifetime may be improved with the possible achievement of low metallic impurity content in the wafers, under 1 ppb wt. Further enhancement is also shown to be possible with the n doping of RST material, a well controlled process in ribbon growth.</dcterms:abstract>
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