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Sulfurization of Cu-In electrodeposited precursors for CuInS2-based solar cells

Abstract : Cu-In electrodeposited layers were annealed using rapid thermal processing (RTP) in a reactive atmosphere containing sulfur vapors. The CuInS2 formation mechanism during sulfurization of electrodeposited precursors proceeds mainly through direct sulfurization of the metallic Cu-In alloy, forming spinel CuIn5S8 and chalcopyrite CuInS2 ternary phases. During the heating step, the Cu-In metallic alloy gets richer in copper as the temperature increases and transforms from CuIn2 to Cu11In9, then Cu16In9 and finally to Cu7In3. The use of rapidly cooled samples stopped after different durations of the process along with ex-situ XRD analysis enabled us to differentiate the Cu16In9 and Cu7In3 phases. Finally, the efficiency of the solar cells made with the two-step electrodeposition and RTP low-cost process reaches 11% (active area 0.421 cm2), which is close to the results obtained for cells made with PVD precursors.
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https://hal-mines-paristech.archives-ouvertes.fr/hal-00592084
Contributeur : Bibliothèque Umr7633 <>
Soumis le : mercredi 11 mai 2011 - 10:05:55
Dernière modification le : jeudi 24 septembre 2020 - 18:30:07

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Cédric Broussillou, M. Andrieux, M. Herbst-Ghysel, Michel Jeandin, J.S. Jaime-Ferrer, et al.. Sulfurization of Cu-In electrodeposited precursors for CuInS2-based solar cells. Solar Energy Materials and Solar Cells, Elsevier, 2011, 95, pp.S13-S17. ⟨10.1016/j.solmat.2011.01.037⟩. ⟨hal-00592084⟩

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