J
J.P. Rakotoniaina
Researcher at Max Planck Society
Publications - 37
Citations - 1046
J.P. Rakotoniaina is an academic researcher from Max Planck Society. The author has contributed to research in topics: Solar cell & Silicon. The author has an hindex of 16, co-authored 36 publications receiving 1001 citations.
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Journal ArticleDOI
Shunt Types in Crystalline Silicon Solar Cells
TL;DR: In this article, nine different types of shunt have been found in state-of-the-art mono and multicrystalline solar cells by lock-in thermography and identified by SEM investigation.
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Quantitative evaluation of shunts in solar cells by lock-in thermography
TL;DR: In this article, lock-in thermography is used to image shunts very sensitively in all kinds of solar cells and also to measure dark currents flowing in certain regions of the cell quantitatively.
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Transition metals in photovoltaic-grade ingot-cast multicrystalline silicon: Assessing the role of impurities in silicon nitride crucible lining material
Tonio Buonassisi,Andrei A. Istratov,Matthew D. Pickett,J.P. Rakotoniaina,Otwin Breitenstein,Matthew A. Marcus,Steve M. Heald,Eicke R. Weber +7 more
TL;DR: In this article, the contamination potential of crucibles used during directionally solidified multicrystalline silicon ingot casting for cost-effective solar cell wafer production was assessed using highly sensitive, synchrotron-based analytical microprobe techniques.
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Material-induced shunts in multicrystalline silicon solar cells
TL;DR: In this paper, the physical nature of the dominant material-induced shunts in multicrystalline solar cells made from p-type silicon material has been investigated, and it turns out that these shunts are due to silicon carbide (SiC) filaments, which grow preferentially in grain boundaries and cross the whole cell.
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Observation of transition metals at shunt locations in multicrystalline silicon solar cells
Tonio Buonassisi,O. F. Vyvenko,Andrei A. Istratov,Eicke R. Weber,Giso Hahn,Detlef Sontag,J.P. Rakotoniaina,Otwin Breitenstein,Jörg Isenberg,R. Schindler +9 more
TL;DR: By employing a combination of analytical tools including lock-in thermography and synchrotron-based x-ray fluorescence microscopy, transition metals have been identified at shunting locations in two types of low-cost multicrystalline silicon (mc-Si) solar cell materials as discussed by the authors.