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Raman microprobe characterization of electrodeposited S-rich CuIn(S,Se)2 for photovoltaic applications: Microstructural analysis
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This article reports a detailed Raman scattering and microstructural characterization of S-rich CuIn(S,Se)2 absorbers produced by electrodeposition of nanocrystalline CuInSe2 precursors and subsequent reactive annealing under sulfurizing conditions. Surface and in-depth resolved Raman microprobe measurements have been correlated with the analysis of the layers by optical and scanning electron microscopy, x-ray diffraction, and in-depth Auger electron spectroscopy. This has allowed corroboration of the high crystalline quality of the sulfurized layers. The sulfurizing conditions used also lead to the formation of a relatively thick MoS2 intermediate layer between the absorber and the Mo back contact. The analysis of the absorbers has also allowed identification of the presence of In-rich secondary phases, which are likely related to the coexistence in the electrodeposited precursors of ordered vacancy compound domains with the main chalcopyrite phase, in spite of the Cu-rich conditions used in the growth. This points out the higher complexity of the electrodeposition and sulfurization processes in relation to those based in vacuum deposition techniques.
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IZQUIERDO ROCA, Victor, PÉREZ RODRÍGUEZ, Alejandro, ROMANO RODRÍGUEZ, Albert, MORANTE I LLEONART, Joan ramon, ÁLVAREZ GARCÍA, Jacobo, CALVO BARRIO, Lorenzo, BERMUDEZ, V., GRAND, P. p., RAMDANI, O., PARISSI, L., KERREC, O.. Raman microprobe characterization of electrodeposited S-rich CuIn(S,Se)2 for photovoltaic applications: Microstructural analysis. _Journal of Applied Physics_. 2007. Vol. 101, núm. 10, pàgs. 103517-1-103517-8. [consulta: 23 de gener de 2026]. ISSN: 0021-8979. [Disponible a: https://hdl.handle.net/2445/24888]